In a word, no. Most FOSS developers are either do it for a hobby or do it for very commercial reasons. Maybe your impression of open source was colored by Richard Stallman and the GNU project but that view was embraced and co-opted by the joys of making $$.
That said, I’m going to get back to a sweet little contract I picked up supporting a startup that is using FOSS software for BigData and Search.
i did software contracting for 10+ years. although quite lucrative, you won’t be able to ‘get off the wheel.’
creating your own products and putting them out is how you get off the wheel. having anti-capitalists ‘compete’ against you by putting out free software (or making cracks available) undermines the small software shop