Prusa is running a pretty good business. 100% of their hardware and software is open; you can print your own Prusa i3, build your own controller board from schematics, modify all their software on both the firmware and slicing side, etc. I don't think it's bad to give them a shoutout on HN, they're doing good work and you can benefit from their work without giving them a dime.

(After struggling with a cheap Chinese 3D printer and learning to hate 3D printing... I switched to a Prusa i3 MK3S and am loving it. The software doesn't annoy me. The prints stick to the bed every single time without fail. And I got to assemble the whole thing myself, so I know how every component works and how to fix it in the event that something breaks. And if something breaks, I don't have to order a replacement part, I can just go to the makerspace, print it out, and be back online!)

Prusa makes the best open source 3D printers. This makes it cheaper. No different than when RaspPi announces a new board.