Those are just examples that can be quickly and easily used because they are famous, and they are famous because they are rich. Do you know my mechanic, Bard? He started out with nothing, now owns his own shop. He's modestly rich by most standards, but he makes a lousy example on the internet because you have never heard of him.
There is a huge spectrum between starving in the streets and Bill Gates. To get off of one end, you don't need to make it all the way to the other end. Most of the middle is very nice.
In this topic I tried to draw a macro-model, i.e. what will happen for the society a whole. Of course exceptions exist for some sectors, but these small niches not affected by automation where you can work for yourself not being a superstar (e.g. hairdresser, plumber, mechanic, repairman etc) will evaporate very quickly as crowd of unemployed will try to take these jobs! Also don't forget that AI capabilities are not static, so after 20 years there may be even robo-mechanic and robo-hairdresser.