Core Viewpoint - The article discusses the complexities and challenges of investing in different industries, using examples from classic dramas to illustrate the differences in business models and profitability [3][45]. Group 1: Industry Comparison - The textile industry is portrayed as difficult to profit from due to high competition and low barriers to entry, leading to price wars and thin margins [18][39]. - In contrast, the pharmaceutical industry benefits from strong brand loyalty and a more stable profit margin, as consumers tend to prefer established brands even if the products are similar [31][32]. Group 2: Business Models - Light asset models, such as those in the pharmaceutical industry, allow for higher net profits with lower initial investments, but have limitations in scalability [8][9]. - Heavy asset models, like those in the textile industry, require significant upfront investment in machinery and technology, which can lead to long payback periods and increased financial risk [22][23]. Group 3: Competitive Landscape - The presence of numerous competitors in an industry increases the difficulty of maintaining stable profits, as seen in the textile industry where new entrants often resort to price cuts [45][36]. - A strong competitive advantage, or "moat," is essential for long-term profitability, particularly in the pharmaceutical sector where brand recognition plays a crucial role [29][30].