"It might require the extreme measure of taxing so much you take wealth from the rich to fund whatever recovery measures you are taking."
Punishing capitalists for creating wealth is just stupid. Let's say you live in country X, and country X does this. Generally there are sufficient ways for wealthy people to avoid being taxed at 102%.
However, in the case where they would in fact have to pay such ridiculous tax rates, they would either: 1) stop working and investing and just live off of their capital, to be exempt from the tax (not great for the local economy + because what's the point / why would I risk my money?); or 2) leave (even worse).
Personally I'm not a believer in that wealthy people will easily relocate when taxes are raised, but in this case, I do believe they would. There's a certain cutoff point where it just gets unacceptable and it becomes a no brainer.