Just like many games today are still single-player or offline games - and some are primarily single-player andor primarily offline games. And this point is key. Not everyone will participate in the activities of the Metaverse. And participating in the Metaverse economy does not mean that all assets are shared and accept a single "Metaverse Currency". It is widely believed that the global economy will be larger and more successful due to openness, trade, and the flow of people and data from one ecosystem to another. However, this does not mean that everything is interoperable andor appropriate elsewhere, or is uncontrolled.
In a few cities and rarely in shops. Your car may be usable on all panama mobile database roads in the U.S., but to drive it at a country club or golf course, you may be obliged to rent their golf cart (even if you own one). And some countries require imported cars with imperial dashboards to be converted to metric before driving, or have their exhaust pipes updated to comply with local regulations.
You can wear your own clothes to Tiffany's or the Met, but that doesn't mean the dress code is up to you. You can wear anything to the movies, but you can't bring food or drinks, and your AMC credit card doesn't work at Cinemark. Currency can be exchanged, but that doesn't mean every business accepts every currency or that there are no fees for exchanging. Many stores don't even accept credit cards -- and when they do, they may only select a few and charge an extra fee.