I will be again the a-hole who is no fun at parties.
The provably fair casino is a bullshit. Players maybe do not trust that casinos are fair, but in fact they do not want the proof that they are playing the games where they can not win. Gamblers deep inside want to lose, that is why they are playing. Provably fair casino that will say: "Oh you slot player, you keep losing 2.37% with each spin, here is the proof, so try as you want, but you are the same loser in life as in this game" will never be popular. Satoshi dice exists for decade and there is no revolution. It is a fringe market.
Provably fair affiliate software would be great, it is long time technologically doable, I liked that idea long time ago and nearly started a project, but in fact nobody from operators want it. They want to steal, they want the control. There will be no change until the big gambling companies start to have legal problems. And even after it is highly questionable that affiliate stats will be on blockchains, because we affiliates are pack of fragmented pussies. And the biggest affiliates are the old geezers, who can barely understand how to pay with bitcoin.
Tl;Dr This is not about technology, but about psychology.
If you talk to God, you are praying; If God talks to you, you have schizophrenia.