Is Nokia wrong?

IS Nokia wrong by only offering the high end Lumia 920 to select carriers? It would seam to me that if they wanted to sell more hand sets spreading it around is the way to do it. Like say making the red 920 exclusive only to Verizon and the cyan color only for AT&T and orange or yellow to T-MO the 920 is by far the best looking device of all them right now, and if they had been spread around I think they would be selling many more than just being on one carrier. As nice as the 820 is it doesn't come close to the 920.So is what Nokia doing going to hurt them in the long run?