The Importance of Supply Related Scarcity

The second kind of scarcity beyond time is supply related scarcity. It can be a purposeful restriction, and so exclusivity falls within this category. I have a perfect example of this with social media. A Jack Dorsey founder of Twitter founded Blue Sky. And right now it's invite only. And there's very few invites, because you're only allowed like, you don't even get an invite when you first go in, you have to earn the invite.