And then they realized there was a lot of money to be made, and switched to a for-profit: https://techcrunch.com/2019/03/11/openai-shifts-from-nonprof...
Now they lock up their most successful advancements, under the guise that if they released things for free they would be abused... but then their results are replicated and released for free by others, and we see there's no meaningful abuse (e.g. unstoppable spam).
They still do amazing research, and publish lots of papers, but that's a pre-req for them to hold on to their talent.
Other serious players went dark and that is very concerning (if you believe a non aligned AGI is a existencial threat for humanity).
All models are behind closed doors, you only get a nice website to interface with a fraction of what they release to the public.
Not really all that concerning, they just realized it's a dead end with our current day tech