You've told us and told us you want the iPhone on Verizon. There's two reasons that hasn't happened already. AT&T has exclusive rights in the US (Verizon, stupidly, turned down the iPhone initially), and the iPhone is a GSM device while Verizon runs a CDMA network (think Mac vs. PC). And, hey, Sprint can't even get simultaneous voice and data going on the Pre with CDMA/EVDO, okay?
However, it seems like Verizon is going to the same LTE standard as AT&T for 4G, and hopes to do Ma Bell one better by bringing it to market by the end of THIS YEAR. (AT&T will be testing this year, rolling out in 2011, and the EU has delayed until 2012!) Gizmodo says it's already running at 60Mbps, so...
With compatibility hurdles clearing in the future, will exclusivity fall next? Could we see an iPhone on Verizon in 2010 or 2011?
(TUAW has a great write up on that possibility, thanks Brian for the pointer!)