Comment by flenserboy

In actual use it would, in most cases, ensure that people would not, could not have long-term ownership of land passed down from generation to generation. There would be significant social downstream effects & likely upheaval caused by this, & that would be compounded by the deleterious results of forcing more & more people to live shoulder to shoulder in the name of that maximum density you mention. No system of taxation is going to be perfect, or even nearly so, but some significantly increase the likelihood of abuse & unintended consequences of bad ideas allowed to run wild. All this without the need for malicious or corrupt action on the part of those in charge of the system, though it strikes me that a system such as the one proposed here would treble the power of officials to strike at groups & ways of life with which they disagree.