Housing is a euphemism for land. The value of locations is determined by the quality of the surrounding community and the environment. This value winds up in land because it is claimed for exclusive use by individuals, enforced by government. Yet, claiming ownership over any part of the surface of this ball of space rock is arbitrary, and no principle of justice can truly legitimize it. Instead of Piketty's blunt "we…
Who isn't paying taxes on their land value? Maybe there are some states that do not, but every year I pay a pretty large tax bill based on the value of my land/house.
In practice it's common for large-scale property investors to use this as a way to accumulate and hold land tax-free or nearly tax-free. At least in Texas almost all large land holdings are held as agricultural land for that reason. Investors keep the land classed "agricultural" until such time as they want to actually develop it. Sometimes this is really agricultural land in addition to being an investment; other times a few gratuitous cows are thrown on some land purely for tax reasons (this is why the city of Houston has a surprising number of tiny cattle ranches within the city limits). The end result either way is that you can accumulate land over long periods of time without paying much in the way of taxes.