I'm curious as to what is keeping the majority of the people from buying on one exchange, where the going USD/BTC rare is cheaper, and selling it on another, where the rate can be USD$50 to USD$100 higher.
There are probably people doing that already. But since opening up accounts in multiple exchanges is no feat, why isn't a much larger portion of active traders doing this?
PS: I understand the answer MAY be speculative, thus not suitable for SE. At the same time, the answer might NOT be speculative - there might be a solid reason behind it. So I'm here to learn. Please vote for closure if you see fit, but do not downvote, given that I am aware of what kind of questions should be asked here.