I hate when companies start issuing legal threats against OSS software; was planning on buying a 3D printer for my kids. I don't know what brand I'll buy yet, but I now know which brand I will _not_ buy.

Prusa has been the stalwart of a manufacturer in the 3DP space that are not sell outs. That being said I think an interesting alternative to Bambu is Snapmaker. Happen to have picked up a U1 [0] and so far it's been very positive. I have had issues with their packaging of Linux installer for the Orca-based slicer, but nothing I couldn't work around.

[0] https://www.snapmaker.com/en-US/snapmaker-u1