Well, it was the success of capitalism that lead to Marx.
There was so much money in 19th century England, guys like Karl M could live without working. So he could spend all his time spinning crackpot theories.
The same effect is now present in the US on every college faculty, multiplied a thousand times.
He was a Jew, who hated Jews.
You say that his theories are "crackpot"; yet YOU espouse them. What does THAT make you; dear? LOL