I agree. There is a more general point that we underestimate that human persons are to a very large extent informational creatures. It's not just young people, look how everyone and their grandma embraced technology once it became easy to use. The world is increasingly informational, people become increasingly rootless and travel and the economy is turning to a vending machine where ubiquitous services deliver most of the things a person needs anywhere in the world. In this world, digital personas and digital property are more permanent than physical possessions. So i expect more of the economy to move to digital assets over time. Zuck is probably realizing that there the opportunity offered from pseudonymous avatars is bigger than the current one which depends on very public, "real names" communications. I think he is right, but i think he is wrong about how much of it he can control.