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As the restaurant industry is a representative service industry, long-living restaurants could carry the secrets of key factors that are needed to establish “sustainable business models” in service industry. The authors aim to answer the following question: How can restaurants innovate business model sustainably to last for more than 50 years through the era of digital transformation with open innovation dynamics?

Five long-lived restaurants from Daegu, Kyoto and Naples were selected separately by using the snowballing approach, and were analyzed through in-depth interviews and participatory observations.

Restaurants in Daegu have lived long mainly because of adding value to their recipes. Restaurants in Kyoto have lived very long, primarily by decoupling their original services, ingredients and recipes. Restaurants in Naples have enjoyed long lives by coupling or recoupling their ingredients, services and recipes.

The implication is that long-living restaurants or service firms could maintain their own sustainability by dynamically circling the following services: (1) adding and boning recipes (focusing on special menus or products), (2) coupling of ingredients (creative recoupling of original ingredients) and (3) decoupling of services (disconnecting the value chain and rebalancing it).

The purpose of this paper is to explore the ideological foundation of open innovation strategies and the open business model, which are appearing as new industrial paradigms based on information technology (IT).

First, this paper examined the ideological foundation of Deleuze, Whitehead, and Popper. Next, Taoism was scrutinized to discover concrete bases for open innovation.

Here, it was found that Taoism completely coincides with the logical basis of open innovation. The theory “the supreme good is like water” of Taoism means to vacate oneself and fill the space with others to create paradoxes, thereby filling oneself with a more creative method.

Taoism provides a way to present paradoxes through the idea of vacating and opening to reach a creative stage of leaving nature as it is.

The purpose of this study is to figure out the factors for sustainable growth of small- and medium-sized enterprises (SMEs).

In all, 27 SMEs in the area of IT (Information Technology) in Korea were analysed through interview method basically.

It is found that sustainable development of SMEs requires two kinds of open innovation which are knowledge strategy and business model. According to developing process, SMEs change their open innovation strategy in knowledge strategy and business model. The highest growth limit of SMEs depends on open innovation in knowledge strategy and business model in sequence from closed innovation in both, through open innovation in both, to open innovation in knowledge strategy and closed innovation in business model and to closed innovation in knowledge strategy and open innovation in business model.

First, the present study was conducted with IT sector SMEs in Korea. It is true that the IT sector is one of the most rapidly changing industrial sectors and is one of representative business types of SMEs in which manufacturing and service industries coexist and diverse sizes of SMEs exist (Malerba, 2002). Second, the present study relies on case study methods. It is true that case study is a method that gives excellent qualitative analysis in firm studies (Yin, 2008).

SMEs cannot survive if they do not accept open innovation in knowledge strategy and business model. SMEs that show absolute limitations in resources and manpower should absolutely implement open innovation strategies to secure more diverse resources from markets and external knowledge bases rather than preparing all resources and capabilities by themselves (Van de Vrande et al., 2009; Yun and Mohan, 2012a, 2012b).

SMEs should bear in mind the two different levels of open innovation, such as knowledge strategies and business models (Chesbrough, 2007; Chesbrough and Appleyard, 2007).

SMEs should not confuse between temporally sustainable development and infinite sustainable development. Firms that take closed innovation strategies in both knowledge strategies and business models can also grow for some time. However, because of the deepening of knowledge-based economy, not only the amount of knowledge existing in the world and the speed of knowledge distribution increased but also the customers’ demands and expectations have been observed to increase in the market immediately through social networking sites (SNS), etc. (Yun and Ryu, 2012).

The purpose of this paper is to discover the economic effects of open innovation investigated the following research questions: do economic effects of open innovation – a certain economic phenomenon or economic paradigm that surpasses the level of the management strategies of individual enterprises – exist? If so, what are the economic effects?

The authors analyse the change of classical economic characteristics, such as diminishing marginal products, economy of scale, and X-inefficiency, which are selected by literature review to find out the effects of open innovation. The authors select long-tailed phenomena and App Store phenomena, which are a direct result of open innovation. From these, the authors find out the effects of open innovation.

Through exploratory-level studies, the economic characteristics of open innovation have been identified: gradual increases of marginal products, the economy of diversity, and X-efficiency improvement.

These three economic characteristics of open innovation have been verified through secondary analysis methods based on the long-tailed phenomenon and App Store phenomenon. Open innovation triggers new economic effects. Thus, the authors should create new strategies and policies to treat open innovation that are based on additional deep research.

This paper introduces new ideas about open innovation in economics.

According to the findings, open innovation will give the authors new ways to develop continuously in a knowledge-based economy.

For the first time, the authors understand the economic value of open innovation and its implications.

Since the first definition of open innovation (OI), the indivisible relationship between this concept and entrepreneurship was undeniable. However, the exact mechanisms by which an entrepreneurial approach may benefit OI processes and vice versa are not yet fully understood. The study aims to offer an accurate map of the knowledge evolution of the OI–entrepreneurship relationship and interesting gaps to be filled in the future.

The study adopted a bibliometric analysis, coupled with a systematic literature review performed over a data set of 106 peer-reviewed articles published from 2005 to 2020 to identify thematic clusters.

The results show five thematic clusters: entrepreneurial opportunities, organisational opportunities, strategic partnership opportunities, institutional opportunities and digital opportunities for OI. Investigating each of them, the authors created a framework that highlights future avenues for further developing the topic.

This study is the first of its kind to systematise, analyse and critically interpret the literature concerned with the topic of the OI–entrepreneurship.

The open innovation (OI) paradigm suggests that firms should use inflows and outflows of knowledge in order to accelerate innovation and leverage markets. Literature examining how firms are adopting OI practices is rich; notwithstanding, little research has addressed this topic from the perspective of small- and medium-sized enterprises (SMEs). Given the relevance of SMEs in worldwide economies, the purpose of this paper is to provide a comprehensive overview of research on OI in SMEs.

In total, 112 academic articles were selected from the Web of Science database. Following a bibliometric analysis, the most relevant authors, journals, institutions and countries are presented. Additionally, the main areas these articles cover are summarized.

Results are consistent in that the most prolific authors are affiliated with the universities leading the ranking of institutions. However, it is remarkable that top authors in this field do not possess a large number of publications on OI in SMEs, but combine this research topic with other related ones. At the country level, European countries are on the top together with South Korea.

Despite following a rigorous method, other relevant documents not included in the selected databases might have been ignored.

This paper outlines the main topics of interest within this area: impact of OI on firm performance and on organizations’ structure, OI as a mechanism to hasten new product development, the analysis of the inbound/outbound dimensions of OI, and legal issues related to intellectual property right management when OI is implemented.

The study uses a combination of bibliometric indicators with a literature review.