Microsoft isn’t going to do shit but throw a little hissy fit over their obvious power play (which they staked the future of their company and resurgence of their brand on) going south. They have no legal recourse and OpenAI has brand recognition and market enthusiasm to weather any shit storm MS tried to throw at them.
So no, if anything this is gonna bring attention to the Microsoft CEO from his own board wondering why exactly he put them in a position to look bad and lose shareholder value without actual ownership of this company.
Time will tell. I think some people just remember the depths Microsoft has descended to in the past as SOP let alone in response to a group of ideologues putting their stock price at risk.