Various other gambling services exist on the net, that utilize provable fair betting.  This is not new.  And these services aren't rolling in cash.  While the market for professional, highly marketed, casinos likely do make a lot of money, I see little incentive for them to switch their systems to PP.  You may have a better system, but you're taking money off the top, so for a casino operator, your solution offers negatives rather than positives, since you would be cutting into their profits.

How do you market this technology so that casinos will want to adopt it?  If their system already works fine for them, and their audience sees that it is fair, what is the difference that PP is going to give them that makes them want to switch?  Switching back-end technologies is surely painful for these operators.  I don't see anyone lining up to do this, so they can share their profits with the world.  Probably be a book keeping nightmare come tax time.