The inheritance tax debate we should really be having in the UK? Whether to set it at 100%: https://www.theguardian.com/commentisfree/2023/sep/25/the-inheritance-tax-debate-we-should-really-be-having-whether-to-set-it-at-100 That goes for other countries too. I don't see a need for inheritance tax on the rich to be quite so high. Surely 90% of large fortunes is enough to collect as taxes. 

 That is a good recipe for expatriation of the very wealthy.  The thing about these kinds of crazy tax rates is that they are for show to the masses.  No one actually pays them.