Why can't everyone use freelancing as their career?

[Btaliat]

Seeing majority of the people complaining about their 9-5 regular jobs sometimes break me down. And this makes me wonder why most people cannot just be freelancers. I don't know if it is possible. I later noticed that there are some people that don't even know that they have some skills that are salable on some platforms. There is a need to know how to get these skills sold to be making money on freelancing services.