Not sure how many services can be hosted in that way and remain useful. But it’s an interesting idea overall! For myself, I could run a Git forge on local PC. Since I’m the only user, and I just keep my scripts there, it is fine not to run 24/7.

Privacy costs money. There are companies that retrofit gas cars into electric ones without making them into trackers on wheels. You can also buy EV kits and do it on your own.