>>run a few numbers with 2 or 3 offspring and a moderate inheritance tax of 25-35% and you will see a most of those bell-curve right (poisson-curve left) scales move away from scale end within a few generations. But on a personal level any inheritance you witness will still feel unequal ;-)

FWIW, they have pretty hefty death duties in France which has helped fund their excellent healthcare system- but what always happens is that need expands to about 105% of available resources and sits there crying out for more. Meaning that any additional tax is a short term relief until you end up in the same position of unmet need a variable time later, except with more tax now. There has to be a rationing mechanism of some description and until society is prepared to have the hard discussions about priorities, there's a constant tug of war involving perception of amoral unmet need. This also is why the US medical "insurance" system always is going to drive premiums towards un-affordability when there are perverse incentives not to ration, but lets not hit that sore spot just now.;-)