Competence ceiling
The reason these companies can adopt these woke policies because all positions are designed to be interchangeable cogs and you only need to me SO competent to work there. The amount of money you would hypothetically gain by hiring someone else is irrelevant.
Hym "There is no evidence that adopting different policies would effect their income in a way that is substantial. You want to believe your values make you better than someone but the reality is that you're not all that competent. The is a visible competence ceiling."