I just heard that gambling is just like MLM schemes as people only loses both in gambling and MLM schemes ?
Is it true ?
I can't find any similarity between gambling and MLM system. In the MLM system you can earn money by joining someone else. They may have more additional requirement in case of withdrawal. But gambling is completely different. Here you will either win or lose. If you win, you will be able to withdraw money immediately.
So you are saying that in MLM we can only win , while playing gambling we can win and lose both

Thru hard work, yes you can make money in MLM. They will offer you the starter kit and it's up to you to will keep on moving up by inviting more people into the scheme or you just stay lazy, use the product and be the consumer.
Gambling is different as some games are based on luck (house system) while others increase the chance to make money thru analysis (sports).
There's no luck base in MLM because you need to prove it's a legitimate scheme and then you DIY.
I guess you keep on thinking they are the same because of the risk that surrounds them.
Those who do not understand the risk involved in the two category always thinks that the risk is the same when they are actually not. Given with danherbias07 explanation, MLM can have a sure profit if done the right way, and get involved in the right way and had chosen the right company. It can be done through research digging. While in gambling, it all depends on how good your chance of getting the win. More or less winning in gambling is all random. And that simply show the different level of risk involved in that two industry.