I was having a conversation about gambling with two young men and one of them said gambling is not for the poor people, that it has the proclivity to favour rich people much than with the poor, and the examples he gave  made me to come close to endorsing his interpretation.

His argument is that the rich people gambling do not have to pack a lot of odds as in parlay bet to accumulate a high odd size that will give a satisfying potential win. The rich has the money to risk huge amount to a single game for instance 2 odds staked with $1 million to win $2 millions,  but the poor staking with $100 to win  $2 million has to pick multiple legs to accumulate odds to get such potential win.  It hence decreases the gambling winning chance whilst the rich gambler chance remains increased.