No way! I refused to believe your first paragraph. It's like you are saying rich people goes into business because they don't like money but because they just want to make the money, that's not true. Gambling is place primary for making money, any one can change their opinion but that's the truth and nothing but then truth. However, a rich person might be playing for fun and less motivation for money like the way a poor person would have in the first place.
Business man doesn't like the money,who words is this.Because it's against the normal nature of science.Such people become the rich person, because they like to generate the money by various way.Gambling is also the money making technique to the rich people.They only choose the gambling site as their entertainment platform.Some of the OP point was true,because rich gamblers never do the expect of the money from the gambling site.So the rich gamblers never get stress after the loss in the gambling site.The attitude towards making money from the gambling site was very less among the rich gamblers.
If the casino are doing it for free, I'm sure they would by now be out of the he business, they are there to make money because they spend money on marketing to get your attention, they pay you when you win and they get paid when you lose and that's how it work continuesly until you either win them or you lose everything to them.
They will play the free game in the gambling site till they learn the game,because they will free from the losses.If the gamblers play the game with the real money,mostly they loss of money at the early stage of the game.But the important one is gamblers must play the initial game with low money for betting.So the initial loss will be low and don't make you to feel more uncomfortable.