Any one planing of going into gambling should first of all come to the realization that gambling was designed originally for those whose heart is strong enough to withstand the outcome of the gambling events as gambling related deaths has claimed the Life of many as their blood pressure increased as a result of losing from their gambling
So before you think of gambling with your hard earned money have a rethink and see if you can withstand the outcome especially in football when the team you placed your bet is losing by 2:0 can you withstand the pressure of watching the game knowing that you're money is going away?
For those who gamble a lot, if there is a possibility of losing money, their blood pressure will definitely increase, whereas for those who have no money problems, there is no possibility of blood pressure increasing. For those who gamble regularly and have multiple sources of income, even large losses in gambling do not have any negative effects.
What you explained is still not the affordability of gambling in a sensible way, if care is not taken, those who have the money and continue to gamble and lose will soon find themselves in financial ruin. Fine, it may affect them less at first since they have more money to fall back at, but this thing we call gambling is infectious and it happens in stages. You might start with a little proportion of your money but with time if you are not disciplined to the point of cautioning yourself with a good budget and risk management, you won't know when you will let it loose and start wagering too big to handle.