If its to join in on the exchange market, I don't think its too late for anyone to be on board. Even people who don't have the kind of assets Roger Ver has, are launching series of exchange sites everyday and they would surely carve a niche for themselves. For Roger, it might be tough but the little goodwill he has been able to garner would surely worth something when he launches.

Helping to reducing dependence on bitcoin is a far fetching dream that I don't see happening any time soon. When people launch any platform, you do so because you want to meet a need in the market not solely because you want to end the reign of another product when one does that, he would only be carried away with policies that would want to meet up with the other rather than growing at its own pace. In the end, its going to end up being a futile journey. I don't any special effect his exchange is going to have that would be more than the major exchange sites we have combined for it to reduce the dependency on bitcoin.