I know but as i say. why settle for a million as a steady income to your business when you can make 2/3/4 times more. we are all human and everyone is driven by Greed and hunger for more. Including this industry
But so far, there hasn't been anything like that from slot end, if you think all the casinos and providers are in on it. Proof would have come out by now. There would be simply too much risk. Why risk something like that which would surely ban you as a provider when you already have other tools to increase your income, like reduce RTP which seems to happen more and more, even with newer slots. Thunderkick has a slot that has only one RTP and its at 94% odd.
There are ofcourse shady things happening, like Corals replacing Play and Go with fake helpfile showing higher RTP then they actually had, but that was the casino end, they have no influence over the actual gameplay of the slots which is on the provider side.