I don't think that's a universal statement that aplies to every kind of documents and languages. Mistral OCR is able to do things no "traditional" OCR was ever able to.
Boltz (they likely have private ones with their company now), ESM are MIT licensed as well. Alphafold older versions were Apache.
In this specific subfield, it looks like open is more common than not.
Didn't Anthropic pull the same in both ways? you pull me up I pull you up kind of deal? Sounds like SpaceX bought themselves some time up to Q4, which is not the case of Anthropic and even worse for OpenAI. Not counting that none of them got their S&P500 fast-track ticket.
The question is, do they wear faster than they become obsolete, as in much more expensive to run than buying a new one with higher compute/watt. (and you can also factor in the ability to run latest models at usable speed)
Apple has done the exact same with its iphone app store, lots of companies got shut down because of their app not beeing available anymore with no explanation. The problem is with exclusive app stores.