Imagine watching an arch be built before you realize arches are possible.

You see all of the scaffolding as it's built.

It looks like any other building.

Then, once it's done, the scaffolding is removed… and it stands on its own!

A magic trick.

An app store is a load-bearing part of the app model.

It could also be temporary scaffolding to get a new negative-friction distribution model going.