It might not seem like the case right now, but I think the real disruption is just about to begin. OpenAI does not have in its DNA to win, they're too short-sighted and reactive. Big techs will have incredible distribution power but a real disruptor must be brewing somewhere unnoticed, for now.
No it's not. Microsoft didn't knew about this till minutes before the press release.
Investors are free to protest decisions against their principles and people are free to move away from their current company.