It honestly probably has too many Linux developers. I’d love to develop for Linux, but the job market is super competitive, so I work building web apps (hosted on Linux). I have the skills to hack on Linux things (I build desktop Linux apps for fun), there just aren’t many job opportunities.
If I could get paid something close to what I’m making now, but to work on FOSS, I’d do it in a heartbeat. But the options I see are:
fight like crazy to get one of the handful of jobs
get paid almost nothing
not work in FOSS
I don’t have the energy for 1 and 2 won’t work for my family, so I go for 3. I do plan to do 2 once I have enough to not need my current income (current projection is about 10 years).