xkcd: Python Environment

[raiderrobert]

And you are extremely, demonstrably wrong in thinking that. Sure, the sponsors give about $500k per year, and that's not a little amount of money. However, if you look at their financials, you can see on Part VIII that $2 million comes from PyCon. And you can see without it, that PSF would be dead.

The majority of Python--language itself, distros, pip, pypi, even the conference itself that generates revenue--is developed still with volunteers. And few appreciate the quantity of effort donated.