That's what I did in 1974. I knew that my income would be variable and uncertain, but I made the choice to work for myself, mostly as a freelance journalist, but also as he owner of several small businesses over time. I made that choice, for better or worse. I'm still doing it, too, at age 70. It's challenging, fun, and a little worrying at times.
However, for those who do not choose this way of earning a living, it's very different. When it's not a choice, the uncertainty and challenging aspects become a real negative. When you are forced into the "gig economy," it's not the same thing at all. Uber may sound like an interesting way to make money, but if you read discussions from people who are actually doing it, it's clear that it's not all that it appears to be.
Lots of people make the risky choice to be self-employed. Others are forced into that. It can work, but only if you're prepared for the uncertainties. Even then, it takes a certain mind-set to succeed as a self-employed person. I'm glad I made that choice, most of the time. I'm glad, too, that I had the choice available.
I worry for the people who have had it imposed on them. It's not for everybody, by any means.