Three casinos are more than enough. For what more? The main thing is that these casinos are large and popular. Winstars can have a lot more partners. But if it will be a small casinos it will not work.
I agree with you. I think the price of the token will quickly go up when users of these casinos buy tokens.
And if tokens will not buy? Tokens will buy for games that are on the other sites. I, as a regular user, of one site will prefer a proven method and will not buy tokens from another site that has not yet started. Maybe this is the situation?