The article talks about Bell and Telus co-building a new network compatible with the iPhone.
I have a feeling it's in no small part due to this:
Quote:
Bell and Telus announced a year ago that they would put aside their historic rivalry to build the high-speed packet access network, or HSPA, together. Market conditions forced the pair to extend their networks, in part because the precursor technology to HSPA, known as GSM, is the global wireless standard, allowing Rogers to collect the lion's share of lucrative foreign roaming deals in Canada.
Based on what you pointed out, I would say that getting the iPhone on their networks is merely a side-effect or an added bonus from the GSM network they plan. I'd bet that the amount they would collect from foreign roamers will be huge, even compared to all the new iPhone contracts they would get. Their main reason for building a GSM network is for the roaming cash; a minor reason would be for the iPhone.