Four, difficulties with monetization: Platforms often rely on network effects to create value, but it can be difficult to monetize that value directly. As a result, many platforms may struggle to generate sustainable profits.

四、变现困难：平台往往依靠网络效应来创造价值，但很难直接将价值变现。因此，许多平台可能难以产生可持续的利润。