I can't really find anything that indicates that merely removing bias (which hasn't happened in corporate America, mind you; we're several steps behind that) is sufficient to break down power structures long term. If you have a source, I'd love to see it!
With regard to the polygons simulation, I think you misunderstood it: once they're segregated, they remain so even if you drop the bias to zero. Active de-biasing is necessary to re-integrate them.
Edit: are you seriously suggesting that e.g. race relations in the U.S. are due to affirmative action and not slavery, redlining, Jim Crow, ongoing police brutality, racial sentencing disparity, etc? If so, I think we're done here. FakeComments indeed.