We need taxes for all - also the super-rich.
"Tax the rich" is an official EU petition. The EU Parliament has to deal with it when successful.
7 EU countries must reach the quorum. And in total 1M Votes are needed. Check yours in the chart and share, cross post etc.!
The petition calls for the introduction of a wealth tax on very large fortunes. Sign the petition here
You didn't read that paper. From fast skimming I can clearly see that their simplified model didn't check for impact of skill at all.
It says nothing about real world except there's a wealth concentrating factor of being ahead. Other factors are ignored