I don't think so. Doubling money in 10 years, on average, is nothing extraordinary. It's a little sub-par. Far more in some 10 years, less in others, sure. But

I don't think so. Doubling money in 10 years, on average, is nothing extraordinary. It's a little sub-par. Far more in some 10 years, less in others, sure. But doubling in 10 years. So even a 50% inheritance tax, erm, "haircut", should be recovered in 10 years and clearly beaten after that by the next generation. IF that was the only issue. It's not the only issue.