Further, it's routine for these long documents to make you 'agree' that they (alone) can alter the 'agreement' at any time, and that it's up to you to keep coming back to reread it and see if you notice any change. They might as well conclude with "Also, fuck you."

I wouldn't blame any particular company for not departing from this equilibrium we're in. But it makes a "meeting of the minds" so absurd it's a mockery of the ancient meaning of a contract.

Edit: I may be thinking only of terms of service; I don't remember how routine that term might be in privacy policies.