The question is, if you wake up tomorrow with 50 million dollars, would you still gamble for fun, or would you forget about gambling and do other stuff? Personally I think I would still gamble. I do it now, and I know I realistically will never get rich off gambling, because I barely do it and I don't risk much money, just for fun sometimes, to test my luck.
So if I had a lot of money, I would do bigger gambles, but they would still enter in the "for fun" amount (for the new 50 million standard). For example, gambling 1K a month would be irrelevant, and winning with a 1K bet can give you big rewards if you are lucky. It would still be fun, in fact more fun, and it would be as non risky as it is now, in terms of going financially bankrupt.
I would still be gambling a certain amount that I can afford to lose. It would be still the same system I used at present. HOWEVER, I will definitely check how much is the maximum allowable bet amount a certain casino site I am playing with. For those who are not aware of this, online casinos have max limit as to the amount of bet a certain player can do.
Therefore, we need to check it first and adjust our system up to this limit of bet amount. We don't want to get caught unaware that we can no longer bet a particular amount on a martingale system and we will be having hard time to recover losses