Binance value comes from servicing those niche projects - it’s an exchange. As long as those niche projects exist, new projects will emerge to service demand. What will change is design; future exchanges will be less regulatable. Already dexes are waiting in the wings; UNI has been in a price uptrend due to these decisions.
A smarter strategy would be to do what the US Justice dept is doing; co-opt the biggest players, install plants, and cut down any upstarts. Government enforced monopolies have worked for hundreds of years as an effective way to control industries.