[tw1010]

Devil's advocate:

Some argue (not necessarily me) that Google isn't necessarily purely optimizing for quality using that 20 year click-and-search log, that they're accepting some inefficiency by biasing for political (left-leaning) gain or "censorship by obscurity". If competitors could more easily build alternatives, which, say, didn't have those biases, then arguably that'd put more competitive pressure on Google to not use their monopoly for bad stuff.