I think it is not good to invest in casino which is good only if ypu have more money to waste in playing casino that is why casino is only for people who have more money or rich people.
You did not understand the OP's post at all.
1.Gambling at casinos - complete loss
2.Investing in casino bankroll - profitable in the long run, passive earning
What this thread is about is point number 2 and not point number 1
We all know that gambling at a casino is a sure loss if you keep gambling. Instead investing in the casino bankroll, you can get a share of the house edge every time someone wins or loses. It is a good source of passive income.
What about losing from investing in casino bankroll? There re several casinos where people have won big time and this money comes from investor bankrolls. So be careful there, there is a change of losing money. Also, there is a change of investor running away with your money as well.