Neither do banks.

> there is no possible way they could prevent their services from being used by violent insurgencies except to not sell them at all

Prevent? No. Increase the cost of? Yes.

Trying to police domestic terrorism by restricting what they see is a bit silly. But if that were a concern, I said "make the database operators strictly liable for breaches and mis-use." Domestic terrorism is mis-use. But it's not precedented mis-use, which makes it a strange priority to get distracted by.