Idk, I've read b2b contracts that have demands similar to this. They arent explicit, its softer.

I have as well, but I'm more of a cynic. Usually you can trace requirements back to either DEI dependent funding or government contract requirements. Less common is an attempt to market or build positive brand association by making a public commitment. With the occasional case where one individual uses their position in a company to sneak their personal agenda in.

Mostly the behaviour is determined by tangible external benefits rather than any kind of real belief that gender ratios should be acknowledged.