So, are we trying build some communist utopia where private ownership of the building is forbidden, all land belongs to government which rents it to a citizens?
No, the building is private property.
> all land belongs to government which rents it to a citizens?
Yes. The idea is that taxing land (not: buildings or property!) is less distortionary than taxing income or consumption. Hyper-capitalistic Hong Kong operates on that model. Property is expensive, but income tax is around 15% and consumption/sales tax is 0%.
Not communism though, more like corporate ownership of everything. That is, corporations own the property since they exist forever, humans rent them, since their existence is transient.
Remote working, minimalism, cheap flights, universal passport, home rental through Airbnb, Uber for travel. The pieces exist, they just need a little time to work through the system.