Evan You(the creator of Vue Js) does, he pulls in $150k+.
He might earn much more in the golden handcuffs of a FAANG, but his is a pretty incredible scenario by all metrics, especially if you consider the reality of the whole job market, not the SV niche making millions a year working at Google & co.
Is it a good living? Yes. Is it commensurate with the value Evan has helped create through Vue.js? Not even close.
But that's kind of the deal with open source, isn't it?