You’ve listed a lot of good reasons why open-source for business isn’t used more frequently, and they’re all consistent with my experience as well. Are you familiar with any consulting companies / vendors who DO advocate open-source solutions?

I’ve been considering starting a FOSS MSP / FOSS B2B consulting firm, but I’ve consistently come to the same conclusion that the tech industry and business culture here are almost innoculated against open-source. If you know any firms that DO recommend open-source solutions I’d love to check them out.

Check out the Fairphone 4/5 running /e/OS. To get a “stock” phone that comes degoogled and ready to use, no tinkering required, you can buy a phone directly from the makers of /e/OS/: Murena

I have not quite finished the book yet, but Kim Stanley Robinson’s The Ministry for the Future is hard-science fiction set in the near future when climate change tipping points start to be reached, and it is so far my favorite book in a long time. It is dystopian, but not bleak or hopeless.