Think before you invest in casinos. Unless you know who owns them and their management never invest in any of the casinos. Else you would realize one day you are being scammed.
Correct, investing on casinos would be somehow profitable but if you decide to put money on them then its better to search to the most reputable one rather than investing to non famous sites which do sometimes shady which have a higher chance of being scammed same as you said.
but if you just curious about how much you can get with invest on casinos, then maybe you can trying, just to know and after you get profit, better you stop your investment and choose another investment that really give you profit for future and long term. i think there is many trusted site which you can choose but you must selected in careful because you don't want to get scam by that site. so be careful and good luck for choosing the best investing btc in casinos.