The spread between Gox and Bitstamp is the smallest its been in a while, percentage-wise. Its only around 5%. this either means that Gox isn't high enough & will go higher in the future, Bitstamp is too high, or perhaps the arbitrage channels are opening up again.
well, if Gox is selling BTC it does not have that % difference should be going down.
No, it will instead be instantly discovered as people attempt to withdraw BTC that doesn't exist.
You can delay Bank Wires infinitely, as they've shown. If you try to delay BTC withdraws, people will just stop using you.
Exactly.
There just needs to be some substantial competition for Gox... and people will go.