The risk is the common one between both the rich and the poor gamblers.But the loss will not affect the rich gamblers and affect the poor gamblers in very deep.Because the poor gamblers money is the life saving money of them,they also use the long time savings.So most of the poor gamblers uses the life savings money in the gambling will leads to the huge pressure to the gamblers.The gamblers with huge money can able to go for the big betting for single betting,because the gamblers have less money will go for the small betting to hold some dollars for the future game.The poor gamblers need to arrange more money for the gambling site.
I do not quite agree with you, because to get pleasure from the game poor gambler enough deposit of $100 and bets at $1. Rich gambler will not feel any emotions from such bets. He needs to bet much more. Therefore, the risk of a rich and poor player is commensurate. If we talk about a big win, the chances of it is also equal, because we know more than one story in which the lucky one won the jackpot by making only a few small bets.