I think those new exchanges are not very attractive and don`t have too much potential to swipe the volumes which would really affect the market in general. So it is not too relevant in my opinion.
Let there be a new exchange, because ultimately natural selection will answer. That is, if the market does not respond, of course it will eventually die on its own. Competition is not something that needs to be feared, because it becomes a necessity. Who survives is what the market responds to positively.