He is not late at all. Roger Ver can potentially change the entire crypto exchange market if he does things right. Just because he would use Bcash it won't make the exchange will fail. Think like this: People use Doge for exchanges because its fast, and low fees. So if Roger does something that would convince people to use Bcash than anything, then there's nothing wrong with that. Right now what the market needs is a decentralized instantaneous exchange ,and if Roger Ver or anyone else for that matter develops such an exchange and does a great follow up on it, then we enter a new era of crypto.