Why doesn't Ye Maozhong produce its own products?

1. In a broad sense, he has produced many products by himself, including planning schemes, advertising films, advertising slogans, works (books) and even students. He strives to build his own brand.

Maybe you think he should engage in manufacturing and produce his own brand of industrial products. I think a person's energy is limited. His strengths are planning, advertising and cultivating students, just like a professor majoring in business administration may not become an entrepreneur.