People won't move off of MtGox for a simple reason: it has by far the best liquidity. The only way for another exchange to get a foothold would be to offer sim

People won't move off of MtGox for a simple reason: it has by far the best liquidity. The only way for another exchange to get a foothold would be to offer similar liquidity, which would mean taking the other side of most trades themselves. This would be very risky and they would need deep pockets.