Purpose – The purpose of this thesis is to understand how specialist firms develop in a concentrated industry by analyzing how microbreweries develop and operate on the Belgian market. Then, the literature reviewed used to build the theoretical foundation of this work is centered around the Resource Partitioning Theory and Niche Marketing Theory to explain this phenomenon. Design/methodology/approach – A cross-case analysis was undertaken. Five Belgian Microbreweries were examined. The data were gathered through interviews conducted with owners of microbreweries based on a structured questionnaire, as well as through secondary data. In addition, an analysis of the Belgian beer industry was conducted, using as secondary data, such as the existing literature on the beer industry, as well annual reports from Beers Associations. Findings – In opposition to the big companies that dominates the center of the market leveraging on economies of scales, the microbreweries strived to create unique products that have a high quality in term of taste. Moreover, they focused their efforts in their region, creating value first for local consumers and not all have an ambition to sell in the whole country or to internationalize the product. Thus, the microbreweries managed to create both functional and symbolic value to the consumers. However, the authors found that the symbolic value created by the breweries had more component than cultural heritage, local and specialist identity. Then, relationship was of importance for the microbreweries as they sought personal contact with their consumer and tried to be involved in their community as well as cooperated with other breweries (coopetition). Overall, the microbreweries practices followed what is described in niche-marketing and entrepreneurial literature. Originality/value – First, this research participates to the resource partitioning literature by contributing to the limited knowledge on how specialist firms are operating, Then, this exploratory study is focused on an ...