If you want to invest on casinos, pick one with a good bankroll management (for example, crypto-games) because there are times that a high roller would win x consecutive times and you will surely lose your investment in no time.
There are several problems which maybe you are not aware of mate and hence let me help you out. The first and actually the biggest danger is that the site we invest might turn scam anytime.
Secondly, there is only a house edge of 1-2% and chances are there gambler wins too. Thirdly and might be wrong, I wonder what stops site from claiming their own wins as players, I mean they pretend to be players and since they know the seed win the bets ?
All investments will come with some risks,
and we should know how to manage it. Whatever you mentioned above possibilities are true, and it can happen to any trusted site. But that doesn't mean that we shouldn't invest in these casino bankrolls because these are high risk and high return investments. So instead of just keeping all your funds in any single casino, diversify and put it in few good casinos. This way you can reduce of losing all your funds all of a sudden.
What does it mean? How can you manage your own investment? Rather than manage it your own, you just analyze it before your put your investment on X site. So i do not think that we really manage it that way, we just take care of it by giving as much money as we have and then let the fortune and big whale give us the profit. We just sit tight and hope whale do not win much. And by diversify it may be you lower your risk but you will get lower profit too