It is arguable whether wealth should be within right to privacy or not. As for items inheritably with illiquid market value, it is also arguable whether we shou

It is arguable whether wealth should be within right to privacy or not. As for items inheritably with illiquid market value, it is also arguable whether we should assess their ongoing market value at all. Real-estate on the other hand, would hardly be illiquid and the United States do have a reasonable assessment program for real-estate. The same cannot say for antique cars or artwork. However, to combat the side-effect of wealth tax requires global governance, which in today's day and age, seems like a pipe dream.