All you proved is that two people from Europe came up with bad ideas that were similar.<quoted text>
You like Marx?
"It is not very unreasonable that the rich should contribute to the public expense, not only in proportion to their revenue, but something more in proportion."
The Wealth of Nations
It isn't a very difficult idea to envision. I am sure he was not the first to think about it. Marx certainly was not.
Lots of people across the world come up with bad ideas. Just because two bad ideas might be similar doesn't make them right.