> Instead you will see key-escrow laws or even bans on encryption.

That's a defeatist attitude: "we can't win, so let's not even try".

It's not guaranteed that pervasive authenticated encryption will lead to key-escrow laws or bans on encryption. In fact, the more common authenticated encryption is, the harder is to pass laws against it.

As an example, consider how common encrypted wireless networks are nowadays. A blanket ban on encryption would be opposed by many of the wireless network owners. And that's only one use of encryption.

Key escrow has the extra problem of being both costly and very complex to implement correctly.