Bitcoin cash and all other altcoins you mentioned are just some useless coins. The hash rate of Bitcoin cash (which has been the most successful fork of bitcoin) is only 0.4% of hash rate of bitcoin.
We don't need any more shitcoins and if there's any other fork of bitcoin like bch, bsv, etc. most of the people will probably sell them just to get rid of them.
Exactly. People look at these useless coins that almost nobody wants or uses and decide against new forks. What would be the point of adding yet another clone that nobody is going to adopt over the real thing?
Most people are completely bad innovators. They just copy paste something that works and hope for profit.
Real innovation, such like that of Satoshi Nakamoto is extremely rare.