I'm not sure what you're getting at, physical investigation is the common procedure. You need a reason _not_ to do it, and since "it's all digital" is not a good reason we go back to doing the usual thing.

It's a show of force. "Look we have big strong men with le guns and the neat jack boots, we can send 12 of them in for every one of you." Whether it is actually needed for evidence is immaterial to that.