I don't think Bitcoin Cash will really be able to displace Bitcoin. The real Bitcoin chain simply has more support and i don't think that will change in the future. It will only become clear in the next few months whether it will stay that way, but so far it looks like it will. We will certainly hear about Bitcoin Cash for a long time to come and he will certainly continue to try to displace Bitcoin, but it will probably only remain a fork of Bitcoin forever and he will never become the king of crypto. But that's just my opinion.