I am covering “a couple angles” because this falls apart under almost the most cursory of examination.

But sure. If we are at a point where there is sufficient publicly available training data, a FOSS product performs comparable to the flagship products of 100 billion dollar companies, and training costs have been reduced to the point that a couple kids on 4chan can train up a new model over the course of a few days: Sure.

Until we reach that point? Actually, even after we reach that point, it would still be unlikely. Because if training is that cheap then you can bet said companies have funded the development of new technologies that allow them to take advantage of their… advantages.