It’s more likely that Microsoft won’t sue at all because OpenAI hasn’t done anything to cause them to (when have you ever heard of a company suing another company over a change of leadership?) and it’s just some silly HN speculation that makes no sense.

Or that if Microsoft did sue (perhaps because something that happens in the near future violates their contracts) OpenAi just spends like 1% of their cash on legal fees. $100 million in legal fees is not an existential risk to companies who recently raised $10b.