Land is quite unique. It is the resource with the weakest argument that humans produce it. Gold, for example, requires human labour to be dug up. Bitcoin requires humans to run machines. The Mona Lisa requires humans to paint. Land behaves differently.
> Land is quite unique. It is the resource with the weakest argument that humans produce it.
I mean, not really. What about water or oxygen? What about carbon taxes insofar as they're related to the inherent value of the earth's climate? There are plenty of resources that don't require any human effort to produce, but that doesn't make them better suited to taxation. It just seems like an entirely arbitrary distinction to make.
In today's world, where access to a city can dramatically change one's earning potential far far more, they are even more relevant.
The issue is both about the scarcity of access to a resource, such as the economy of a city, but also about where that resource comes from. With urban land, that resource is not the product of the individual land owner, but rather all the other land owners that made the city so prosperous and with so much opportunity.
Yes, it is (or, at least important subsets of land are.) If it wasn't, it would have zero value. Nonzero market value requires, and therefore proves, scarcity.