You don't come across as serious. As a kernel, python, and postgresql contributor I never made money on it. You also don't seem to understand the things you're saying now. Your rebuttal, frankly, doesn't make sense. Perhaps my fault here is is assuming you actually understand the things you're offering in rebuttal.

It's not that I'm fragile, but you appear to be spraying BS. But maybe you don't understand. That's why I assumed you're a troll. If you're serious, I'll happily continue.

As an example, your logic is people who grow vegetables for themselves never grew them for themselves because the might also sell the excess? Even though they commonly give away surplus. It's the same with open source. If you know anything of it, then you know there are millions of projects from which they do not directly benefit financially. That's the point.

Humans have an itch and they scratch it. Europeans tend to share these. If it also benefits in income, then so be it. That is capitalism at all.

What does your example space trucker get from moving cargo around the same route ad infinitum?

If post- scarcity actually existed, we would know. As I said at the very top, they speculate. Your speculation is as good as any. But the point I made is that humans like to find purpose. Space trucking is certainly more honorable and purposeful than doing nothing, waiting for death.

Just as people grow plants they can't consume, build with wood, write, make art, and never profit.