Louisa Coffee, the largest domestic coffee chain in Taiwan, illustrates a problem that often confronts successful retail businesses: a company can perform well on some financial measures while struggling on others. In 2024, Louisa generated 2.3 billion NTD in revenue and maintained a gross margin of 46 percent, yet its net profit fell below 100 million NTD—an average of less than 200,000 NTD per store. This shortfall caused the company to postpone its planned public stock offering and prompted a major shift in strategy. Founded in 2006, Louisa was designed to occupy a middle position in the market: it offered a more comfortable atmosphere than low-cost competitors but charged less than premium chains such as Starbucks. After the company began offering franchises in 2012, it expanded rapidly, and by 2022 it operated more than 530 stores. However, this growth produced three difficulties. First, rising global coffee bean prices and losses from financial hedging reduced profit margins. Second, with roughly 60 percent of stores run by franchisees, the company struggled to maintain consistent service quality. Third, the inviting store environment attracted students who stayed for hours after buying inexpensive drinks, displacing the higher-paying office workers the brand had originally targeted. In response, Louisa has begun transforming itself from a coffee chain into a broader food and beverage company. It has expanded its central kitchen facilities to lower supply costs, introduced light meals and desserts to raise the average amount each customer spends, and launched entirely new restaurant brands in Thai cuisine, premium steak, and vegetarian hot pot. This transformation can be analyzed through two well-known business theories. According to Michael Porter, firms succeed when they commit clearly to either low cost or distinctive value; those that try to do both often become "stuck in the middle." Louisa's current customer mix suggests precisely this problem: by welcoming long-staying, low-spending customers, it has weakened the differentiation it originally sold. A second theory, developed by Prahalad and Hamel, holds that diversification works only when a company's core capabilities genuinely transfer to new ventures. Louisa's kitchens and supply chains may transfer easily, but its brand identity—built on affordable coffee—does not automatically extend to steakhouses or hot pot restaurants. The success of its transformation therefore depends on whether the firm can rebuild positional clarity in its core business while diversifying only where its capabilities truly apply.