> Single-sign on is actually a really obvious and familiar example where you achieved better security

My local all-eggs basket vendor agrees 100%.

All the eggs keep being stored in the same place (same computer) either way, but one gives them a deluxe padded package and the other one wraps a random material around each egg.

Because deluxe padding only comes in multi-egg size, I guess.

Deluxe padding is a very high quality password and/or a physical device.

You're not convincing a normal person to memorize 20 high quality passwords, and multiple physical devices are going to be put on the same keyring.

So in short, yes.