Without big investors there is no future!
While investors are indeed very important for Bitcoin and altcoins, especially for its sustained growth, I don't think investors are the only future now for both Bitcoin and altcoins. So far, we have seen how cryptocurrency has grown so huge with only a very small population in the world supporting. Do you think that cryptocurrency will die simply because the larger population is not anymore interested to invest? Of course not. The success of crypto right now is already fantastic.