It's kind of breaking the social contract. Licences were drafted, conferences were held, and endless flamewars tried to codify what it means to collaboratively build, distribute, own and use open software.

Then came the model trainers, ignoring the entire discourse, reasoning: "if I can download it, it's mine too use". And then basically selling the resulting tech back to the community.

Not unlike big tech extracting money from open source, but at least the latter usually (somewhat maliciously) complied with the license.