Ferros is one of the open-source devs who make a huge amount of open-source work, but rather than spread the glory and share ownership, he instead complains that they have too much work and start to try commercialise their work. He ended up trying various experiments to fund his open-source work, one including selling terminal space when installing npm packages.
"This was due to a project funding that was created by Feross, one of the StandardJS maintainers. The idea behind Funding is that companies buy ad space in people’s terminals, and the Funding project then shares its profits with open-source projects who signed-up to show the ads." - https://dev.to/adriansandu/npm-bans-terminal-ads-and-mozilla...
My point is that he could have a normal job, but he got lucky with a few projects and then built a life around the kudos from open-source projects (like Nintendo's endorcement).