The issue is that UK is obsessed with equality and redistribution, not prosperity.
It doesn't matter how poor we are as long as the neighbor doesn't get it better.
If we wanted to prosper we'd stimulate growth and celebrate successes.
IHT as an example - we have the worlds 2nd or 3rd highest IHT rate. A lot of countries with excellent welfare system abolished IHT many years ago, most of Scandi included. Yet IHT hits the same group of middle class who have nowhere to hide. The truly rich ones have mechanism to avoid it, e.g. Duke of Grosvenor. Some wealthier but not uber rich move abroad.
Some years ago Andy proposed to abolish IHT and replace it with 10% social care levy on all estates with no threshold. This is excellent idea - by widening tax base you get much more in receipt, but 10% is low enough for wealthy to decide to move or take some estate planning measures. So tax receipts could easily double if not more and the same hit group wouldn't feel so resentful. But hey, the richer will get more, so this will never happen.