It's because there are only two types of people in this world:
1. People who takes advantage
2. People who likes to be taken advantage
So, of course, we cannot really force them if they only wanted to work because their mind isn't programmed to be unique and only follows where there's huge crowd. Besides, there's a reason why we're here in this forum learning and discussing some things while are busy following their boss because they are not the ones who are in total control.
And I agree that not all people are skilled to have their own business, but that doesn't also mean that they aren't skilled to have their own investment.
Even if what you say is true, but on the other hand we also can't make it seem as if we have to be in business because we obviously have partners in life and of course for people who want to do business it's clear they also need workers right? this is one chain that cannot be separated.
We can't develop our own business if we become a businessman. On the other hand, workers also cannot if there is no boss who orders them. Everyone has their own share in this matter.