The "Metaverse" is such a vauge and boundryless concept that's it's almost meaningless. You could argue that email and the Internet are already a kind of "metaverse."

Facebook's announcement says more about Facebook than the product/solution that Zuckerber is pitching.

The "metaverse" should be a collection of tools that people choose to use; like the Internet. Facebook would like to take away that choice. It would like control and to monopolize.