I have a good friend who’s in the “hi end desktop cnc” bizness (with some very cheap models). Asked why he doesn’t do 3D printers (he designed plenty) and he told me the market is SO competitive and products so cheap it’s impossible to compete.

Designing a controller for his machines and as much as I would love to put the thing as OH, I don’t even think of it.

His company:

https://www.badog.ch/