He is a speculator, not a capitalist. A capitalist adds value, even if he is a passive investor like Warren Buffett seems to be. Speculators and black marketeers exist in every economic system, and in fact a repressive, overregulated system is what generates them. The rishus of Soros is that unlike most people who play games like that (D-ek etc), he has the talent and training to do something constructive.
The question I have always had is who is Soros acting for. My suspicion lies in the Arabian Peninsula, as they would have a great deal of interest in wrecking economies for the glory of their evil religion.
(Marc Rich and Pincus Green were crooked speculators as well, but they were actually acting as agents for either the US, EY or both, which is why they were pardoned. They also are probably among those who ensured that Khomeini YMS allowed a free flow of Jewish emigration and assets from Iran).