Yes, agree on the technical difference, DF, but even having a 50% level is quite discouraging. No wonder many rich people are enticed into employing tax specialist firms to try to avoid some of the taxes.
I suppose (far too radical) the whole tax system needs a massive overhaul to simplify rules and cover just the 4 or 5 areas - income, inheritance, investments (shares and bonds), capital gains, and company profits/bonuses.
(Sorry, not a tax expert, hence out of touch with what other areas may apply).