If you know any employees of the big boys, you'll know that management is not supportive of diversity until they face worker revolts. Your model makes no sens

If you know any employees of the big boys, you'll know that management is not supportive of diversity until they face worker revolts. Your model makes no sense. If powerful forces wanted diversity out of self interest all along, we wouldn't even have a diversity movement, because the environment would be diverse already due to natural locally optimizing market forces, so there'd be nothing to advocate for.