a) Trading isn't zero-sum. If you meant to say HFT, no, that isn't zero-sum either. b) Trying isn't enough. A billion blown is a billion blown, it doesn't matt

a) Trading isn't zero-sum. If you meant to say HFT, no, that isn't zero-sum either. b) Trying isn't enough. A billion blown is a billion blown, it doesn't matter what your intentions are - and if it does, I'm sure most HFT-traders are convinced that they are benefiting society and the economy. c) People are also making a living of off money spend in HFT-space, regardless of what their intentions are.