Of course, but we are as a society so far away from that. It requires a bigger cultural shift than we are anywhere near. Even the thought of an inheritance tax is very unpopular.

Yes, even as a very social democratic country with a highly educated populace, we can be pretty stupid about taxes.

Also most really rich people have their wealth in assets and make their money as gains on those assets. So it does not really tax the most important people, except maybe some C-suites.