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People rationalize they are being given money for free or that they are saving money, when in reality it is all a well calculated strategy put in place in order to make gamblers and creditors to consume more.
No business gives money for free, They give Rakeback which looks profitable for the player,
But as you said everything already has its calculations and this will also affect the psychology of each player.
Rakeback 3%-5%, but spend more money than usual just on a small rakeback.
be wiser and know how to do game management in gambling, because the casino will not be responsible with losing bigger money,
this is a game and it should be the game there will be wins and losses.
I am sure businesses, both banks and casinos, see rakeback/Cashback as a investment. They purposely give up on part of their income or profits, so in the long term they get even more money.
One think is the fake perception people have on those perks, as of they were getting money for free from casinos, and a different thing is what actually happens in the book-keeping of casinos and banks. In reality, rakeback and Cashback prompts people to spend more and gamble more and that is what matters in the eyes of those businesses.