Casino owners spend time and money to create alluring offers where gamblers will be engage and keep them stay, from that kind of situation rich gambler who knows how to control can take advantage of it, they know how to spend their money well and they understand the concept of wagering their deposit and in return they can make some decent bonuses out from the money that they deposited,
unlike with poor gambler where the amount that they deposit mostly intend to use only for betting and they are not well aware of those wagering opportunities, they just bet and hope for luck to double or to give them decent amount of winnings and nothing else after that, while rich gamblers who enjoying the offers can make that additional winnings aside from the luck that they are expecting while playing the game.
And for all groups of gamblers, they can only play and bet according to their wishes.
Yes, and this is where there is definitely a difference between rich gamblers and poor gamblers, namely, as you have said, rich gamblers are equipped with a broad level of insight and they tend to be able to control themselves when gambling and for poor gamblers, because their level of understanding is still low, poor gamblers often experiencing negative impacts due to their own actions which have not been optimal in controlling themselves when gambling.