I just heard that gambling is just like MLM schemes as people only loses both in gambling and MLM schemes ?
Is it true ?
I think that this is totally no sense question. Multi level marketing is a kind of marketing where people upper to you earn based to your results, and so on. Gambling is playing in game by challenging a casino and at the same
time trying to win. Where do you have heard that? Maybe the one that has told to you this was drunk

Most probably he is referring to the gambling agents here who are looking for the players so they can earn the commission but honestly, I also don't think any similarity with this one since from the word Multi level marketing, that means they are selling a product and have the scheme who ever goes on top will always be a high beneficiary on this kind of business. Gambling is not an MLM, they don't need so much about marketing since their business is to provide good service to gambler and in return, they will earn some from the money of every gamblers.