Don't you see the contradiction? Critical infrastructure costs gobs of money. The software has to pay for itself, or it has to survive on crumbs; that's just reality. Software is really, really expensive to create and maintain, because it takes a lot of time, and time costs money.
I wish Richard Stallman hadn't duped a generation into thinking that they have to use licenses that make Amazon richer instead of just using proprietary licenses to protect yourself, as the licenses were designed to do, so that people with more lawyers can't just steal your work.
Why did our whole generation listen to a guy who was caught on camera eating something off of his foot?