Again, while this may be currently true for the most part, this is not considering the future evolution of technology. Models are only going to continue getting cheaper to produce. While it is possible that it is prohibitively expensive today (and I'm not convinced that that's the case universally) that will not be the case in the future as model training is essentially guaranteed to get dramatically cheaper in the coming years due to hardware advancements. Burying our heads in the sand now isn't going to help anything.