The approach to market tradition, culture and trends could give higher possibility that new launch erc20 token will become successful. The volatility of market is the common struggle where some new tokens cannot survive til' the end. Also one erc token name cannot hold altcoins world which we know bitcoin hierarchy.
We cannot blame any token if the market crash.
We cannot pin point any token when the market rise.
One branch of token is different from other.
Although it is possible that the investors are the same, but more likely investors here is not 100% the investors there.