Nah, open source just isn't lucrative.
https://www.patreon.com/sindresorhus
Most JS devs know sindresorhus by reputation. You can't help but knowing him through his work. He even put up a separate twitter solely because people kept wanting a way to see whenever he made a new github repo.
Patreon makes him $3300/mo. So that appears to be the ceiling for all of us.