Why not? We expect and demand that banks monitor billions of transactions between 100s of millions of customers for evidence of money laundering and terrorism financing - and fine them billions of dollars when their controls or oversight are deemed insufficient. I expect most us agree that banks _should_ be held accountable for the legitimacy of their customers behaviour. Why should the same standards not be demanded…
A couple differences that I believe are relevant: a) Bank balances are a more controlled system from the beginning. They 'know' how much is in your account and when you transfer it they 'know' how much and to whom. Meanwhile, Google, Facebook and so on are not keeping active track of the nature of your conversations within chat and email in such a tightly controlled way. When I say "Hey, what's up" to a friend in Fac…
The question is, should they? I'm sure banks weren't always as tightly regulated and didn't keep as tight a track of everything as they do now.
Should we ask web giants to start behaving in a more regulated way for various reasons ranging from the ability to get alibi from "I posted this on Facebok at X and couldn't possibly have been where you say I was", to the ability to have court evidence of what people were/are up to. If data isn't kept to a certain standard it becomes too unreliable in such cases.
On the other hand, do we actually need banks to have such a tight control over everything? Yes, we expect it. But do we need it?