I think RIMM will go even higher. They make about 60% of their money on handset sales and the new colored "Blueberrys" are really hot. But, the kicker for RIM is that they have revenue sharing relationships with 50 carriers worldwide. Contractually, RIM gets 20-40% of the data revenues generated by the carriers' blackberry data plan sales. The average Blackberry user spends $40/mth for data services so RIM ends up with $10-$17 of that number.
Once you put together the numbers (1 million subscribers) and the fact that the European markets are still relatively untapped for Blackberry, i think their market is huge. Does it validate such a high stock price? That's another argument but I can't help but think that more good news is coming down the pipe for these guys.....