Labor. And the fact that people are buying things that were made off of the backs of literal slavery.
I repair machines for a living, and people are buying these $100 machines, and expect a 3 hour repair session to cost them $50. It doesn't. Even with parts available and free, at minimum I'm charging them $100. I should be charging them even more.
Most people are far too uninterested and willfully ignorant to repair their own things, sadly.
Oh, and this is in a field where all of the machines are basically open source. So there's no single company behind it all, controlling access to things - but in a field where there is healthy competition.