It could be a lot more closed than it is, from a general public perspective. i.e. the company having this cool AI and we not even getting the opportunity to use it at all.
They couldn't be, realistically, any more closed without being an essentially infinite money sink of the kind even nation states would struggle to fund long-term. It's the public using it that's helping offset costs and also giving them the usage data that they need to iterate on the design.
Yeah but even then it would make it to consumers through their customers.
A bit like MS Copilot for Bing / Windows which is really just rebranded ChatGPT. For the O365 version they added a lot of stuff to interact with office but their online chatbot is just the same.