I think his point is that the global interest in the Chinese market won't be that big.
Yes they have a huge enough market to sustain themselves, but why would someone from a western background get excited about a brand new league in SE Asia when they have established to focus on first.
The Chinese don't need outside interest. Their population self-sustains a league without relying on any overseas revenue and even paying these huge wages and transfer fees will see them reap a profit. They aim to have 50 million children and adults playing football by 2050 and if they do that, they will dominate. They couldn't care less about overseas interest.