市场上的机会成本来自哪些方面？

Market Size - Market capacity significantly determines the revenue ceiling of a product, and entering a niche market implies forgoing the scale benefits of a mass market. Evaluating opportunity costs requires assessing the compatibility of internal resources with the competitive pressure of the chosen market space [3]. Market Growth Rate - In high-growth markets, companies often increase their investment-output ratio, but this comes with increased risks. Conversely, low-growth markets offer more stability but may limit growth potential. Choosing a low-growth market entails accepting the risk of falling behind in high-growth expansions, while pursuing high-growth markets necessitates readiness for cost pressures due to volatility [5]. Market Concentration - Market concentration reflects the current competitive landscape, aiding in the assessment of entry difficulty and profit potential. High-concentration markets are dominated by a few giants, leading to higher costs for new entrants. Low-concentration markets have less competitive pressure but may face rising customer acquisition costs due to a lack of scale effects [7]. User Aggregation - In highly aggregated markets, users are concentrated, resulting in lower marketing and channel coverage costs, but may also lead to issues of homogenized competition. Conversely, low-aggregation markets have dispersed users, increasing customer acquisition costs but allowing for the development of potential core user groups. High-aggregation markets often experience lower user loyalty, while low-aggregation markets face significant initial pressures [9].