I agree with you, although the casino has a house edge, which I believe homeowners should always prevail. but they could manipulate the investment fund, if they lose a lot.
That is true, and that is the risk one should take if they want to make money from these casino sites investments. So it is better to find an old and trusted sites to invest instead of putting our money on any new sites. Also, diversify your investments into few good sites to reduce your losses from this kind of issues.
many casino offering low minimum investment below $100 , i dont think it will profitable.
however risking your money to invest in casino is better than have to gamble it directly.