you have to do zero real work to get profits that way. The profits you are getting are just a share of the wealth the workers of the company produce. There is no such thing as passive income, the money is always taken from working people. The really rich people take 0 risk. The instant they start making serious losses banks and goverments step in and give them taxpayers money.
Also: to get relevant income that way you already need to have a lot of money, which you either get by inheritance or exploiting others. Either way you had to do zero real work yourself. (and no, just shoving capital around is not real work)