I don't think they missed AI boat. Their culture would not have allowed them to create OpenAI, but they were fast to leverage their moat and push AI into their office and windows suites and azure. Hell, they are even trying to catch up with search using AI and are trying to push Azure for various AI startups and stuff.
MSFT rarely leads on anything - arguably even Windows is something they created being inspired by something else, while not going deep into hardware. Which what became the undoing of IBM. They are much better at being second. Azure - they were behind AWS, but not as late as Google.
I bet with Satya, even with mobile they would have grabbed Nokia much earlier and pushed Windows Mobile before Android took off.
AWS missed AI boat though.