I think stock markets have a much longer tradition in the US and France than in Germany. Here the traditional enterprise is personal business with low equity and a lot of credit. So the rich people in Germany are often large borrowers of money from the middle class (their workers), instead of creditors. In recent years there are increasingly people with lots of money, who have never been entrepreneurs, but I think that is really a newer development. Der Amerikaner ist die Orchidee unter den MenschenVolker Pispers
However, today even when taking more from the very rich is feasible, it would be an illusion to think one can help all the weaker people in the society without a large contribution of those who are just rich, but not the very rich. Der Amerikaner ist die Orchidee unter den MenschenVolker Pispers