You are right. But most investors fall victim to scams. A few lucky people have become millionaires with this kind of risk. And seeing the success of those few, others rushed to seize the opportunity, looking for different projects in the hope of getting rich quick. And then these kinds of projects come in the market, and they do good marketing for a few days so that the investors are attracted to them and invest their hard earned money.
If their target fills up, then the scammers will delete everything and go offline with the investors' money. So a good project can give you some relief. Because at least they will not do such a thing.
Maybe it's still said to be lucky because he must have done well-known research so that he found a better project to invest in in the early stages of selling, this could be a millionaire. I see more IDO enthusiasts and even new investors want to follow in such a footsteps.
No wonder investing in the first phase is wanting to get rich quick with a higher ROI, that's why you might be tempted by other things so that when you make a wrong step you can become the next victim.