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.
That they reached a different conclusion than the outcome you wished for does not indicate a lack of critical thinking skills. They have a different set of information than you do, and reached a different conclusion.
Only time will tell if this was a good or bad outcome, but for now the damage is done and OpenAI has a lot of trust rebuilding to do to shake off the reputation that it now has after this circus.
When you see 95%+ consensus from 800 employees, that doesn't suggest tanks and police dogs intimidating people at the voting booth.
1. The company has built a culture around not being under control by one single company, Microsoft in this case. Employees may overwhelmingly agree.
2. The board acted rashly in the first place, and over 2/3 of employees signed their intent to quit if the board hadn't been replaced.
3. Younger folks probably don't look highly at boards in general, because they never get to interact with them. They also sometimes dictate product outcomes that could go against the creative freedoms and autonomy employees are looking for. Boards are also focused on profits, which is a net-good for the company, but threatens the culture of "for the good of humanity" that hooks people.
4. The high success of OpenAI has probably inspired loyalty in its employees, so long as it remains stable, and their perception of what stability is means that the company ultimately changes little. Being "acquired" by Microsoft here may mean major shakeups and potential layoffs. There's no guarantees for the bulk of workers here.
I'm reading into the variables and using intuition to make these guesses, but all to suggest: it's complicated, and sometimes outliers like these can happen if those variables create enough alignment, if they seem common-sensical enough to most.