Isn't this concept similar to a way of me loaning my money to the casino who's paying me interest over a period of time. I really don't understand what's different and why can't we just say there're taking a loan from us. If I'm wrong kindly someone correct me.
Interest is simply calculated as a percentage of the amount invested. Making an investment whether in a casino or any other type of business is to take a share of the risk and reward of that business's profits or losses. I think it is a fairly obvious distinction that interest on a loan will not be negative but a businesses profits might be. Becoming an investor in something is not loaning money.