FYI such a tax exists in France already: https://en.wikipedia.org/wiki/Solidarity_tax_on_wealth https://en.wikipedia.org/wiki/Solidarity_tax_on_wealth A purpo

FYI such a tax exists in France already: https://en.wikipedia.org/wiki/Solidarity_tax_on_wealth https://en.wikipedia.org/wiki/Solidarity_tax_on_wealth A purported merit is that it should desensitize to sit on real-estate assets. It also comes with the twist that you can get a rebate by investing in privately owned SMBs. Methinks that if you deploy that large scale you'd end up fueling tech-bubbles.