The exchanges he has invested in are not stupid and they're not charity cases.

If he starts attempting to get them to throw their business away to service his grudge they'll tell him to fuck off. Somewhere of Kraken's size will have some very significant investment from elsewhere and it won't be happy if he starts to meddle with it.

If he wants to continue on his doomed quest with an exchange that defies the laws of economics he'll have to create it himself.