Well this probably disproves the theory that it was a power grab by Microsoft. It didn’t make too much sense anyway since they already have access to tech behind GPT and Microsoft doesn’t necessarily need the clout behind the OpenAI brand.
Buying them (or getting de facto control) is clearly an easier way to achieve that, vs. replicating the technology in-house.
IMO this is the most important part of Nadella's blog post:
> Most importantly, we’re committed to delivering all of this to our customers while building for the future.
It's curious to me that they see the departure of Sam Altman as a reason to remind us that they are "building for the future" (which I take to mean: working toward independence from OpenAI). I think it actually lends credence to the theory that this was a failed power grab of some sort.