I think its more that they have a monopoly on search in the current zeitgeist. So no, I don't think they've done that, and if they did, there's no pressure for them to optimise for speed, so they'd optimize for something bloated that helps someone get a promotion. This is why, for example, everything Microsoft Office does is a bloated trash fire, and how Apple gets away with telling a whole generation of phone purchasers that they were holding it wrong.