Consistency is the key and if you already have millions of money, you can really afford to take the risk and bet huge amount of money on the games that you'd love. Reaching that mark may take time but if that player is so serious, it can happen as long as Rollbit is still here which I know this gambling site is meant to stay. Imagine the trust that gambler put into Rollbit, a high roller will always be appreciated and congrats to Rollbit for having those kind of gamblers, such a big player.
Super rich people do not become super rich by gambling it away, believe me when I say this all the gamblers you have seen, even the ones that gamble a ton of money, are people who do not have much much much more than what they are gambling.
I have seen a guy gambling over a million dollars and dude had like 10 million dollars, which means dude just wagered 10% of it is all money (total wagered not each bet) and when I look at someone who has 1+ million dollars wagered I think about someone who must have at least 100 million dollars, probably more and there are not so many of them in the world so I always feel weird that I see someone who is in the top 10k richest person, then I realize they are not even in top 100k because they are wagering almost all they have. Long story short there is a good amount of people who just end up broke after a while as well.