I do not live in the UK, but across the channel.. Had to look it up a bit as I do not follow this in great detail but there is some significant debate there on inheritance taxes I believe?
I appreciate that this is a complex topic, but the point I tried to make in response was that these things are rarely as simple as people make them out to be. Increasing taxes on wealth transfers could have all sorts of side effects which are not easy to link as nothing in the economy happens in isolation. I thought the UK was perhaps a relevant example, as France and Sweden have been recently as well.
The economy is not a zero sum game, and the rich can get richer while the poor get richer as well. Maybe this is not a fair representation of what is going on, and I am certainly no expert on the US economy, but the whole "just tax the rich" mantra does not seem obviously true or effective to me.
I agree though that the system as a whole feels broken.. but also, because it is "small club, and we ain't in it". Wealth has a significant influence on policy...