I think under normal circumstances, you'd be correct. But in the case of Verizon and Microsoft // Google.... Verizon has chosen Google as a partner. This is why they fill their stores with tons of Android devices and only one or two Microsoft. When I was in the VZW store a couple of days ago, they actually had twice as many Blackberry devices as Microsoft - and Microsoft has a larger market share than Blackberry. I was also told by a VZW rep that they would NOT be putting any high-end Windows Phone devices on their network unless they first were popular at the other networks - meaning that they'd only bring in older technology - not the newer equipment. (In fact, I went in the day before the Icon was released and the VZW rep had absolutely no clue it was coming out. Also, the Icon is just a smaller version of the Bandit, which was released on AT&T's network last year.)
Side note: When I went into a VZW store a while back to look at the Trophy, the store didn't even carry it and the store manager was outright hostile for me asking about looking at it. He was adamant that VZW would not carry any Microsoft device as they only liked Google & Apple.
