I don't think so actually. They have the longest and best track record of any exchange. Doubt they'll play games with this ETF custody business. They're going to make a mint on the fees they collect.

I'm interested to see how it plays out though. If the ETFs get big, the buying and selling on the spot market on Coinbase might make for some good arbitrage opportunities between Coinbase and the other exchanges. Big price dislocations. Only if the ETFs get big, which I'm not sure that they will.