Will Microsoft stop the carrier exclusive games?

Since the Lumia 900 launched two years ago Nokia has continued to bend over backwards to carriers, particularly AT&T and to a lesser extent Verizon. We never did get a 900 variant anywhere but AT&T and it took 6 months for Verizon and T-Mobile to get the 928 and 925 respectively. Now the 1520 and Icon are both locked to AT&T and Verizon. Sprint and other carriers still have no Lumias whatsoever.

It's been fairly well-documented that AT&T paid fairly well to keep the 920 off other carriers, and at the time Nokia had no choice to accept because the financial state they were in meant they needed to bank on the short-term gain. Do you think not having that burden of needing an immediate return means Microsoft will do more to ensure they get flagship devices on every major carrier? If marketshare increase is their goal, locking out more than half the US is not going to help that effort.

It may not happen with Goldfinger and the first wave of 8.1 devices, but in the next wave after that I'd love to see successors for the 92X/Icon, 1020, and 1520 all released on at least all four majors if not them plus the likes of USCellular, Virgin, etc.