Bigtech will happily store data on their users indefinitely so they can mine it in the future, should they think of new profit-generating ideas. But they will a

Bigtech will happily store data on their users indefinitely so they can mine it in the future, should they think of new profit-generating ideas. But they will absolutely delete their employee's emails after N months unless they are on litigation hold (i.e. legally required not to do so). Complete double standard.