Wow... so yea, you're all wrong. I think it is safe to say that, after securing an exclusive, multi year deal with Microsoft, that the NFL and it's content will be distributed in a number of ways beginning in the 2015 season. There won't be an exclusive TV distributor for Sunday Ticket this time around because I think that the NFL realizes that the money is in making a deal with everyone and it keeps all of their fans happy.
Microsoft got their piece of the pie to deliver content and an experience that they feel will drive sales of the Xbox One, Windows 8, Surface, etc. Seeing that the NFL dropped support of the PS3 this season, tells me that if Sony wants NFL content on the PS4, a similar amount of money will have to be paid to them for those privilages. And with Sony contemplating and negotiating an a la carte cable TV service (partnering with the likes of Viacom, Virgin, T-Mobile to deliver a propritary internet service is a start) I can't imagine the NFL is going to say "we already have a half billion from Microsoft, that's good enough."
Not to mention that, at this point, there is not going to be any one cable provider that will maximize delivery to every potential customer. Not even Directv can do it currently, because people's experiences with their service are all over the map, and there are some people that just can't get it because of trees, etc. And with my experience as a previous Directv customer, I could tell how far away a thunderstorm was by my Directv going out (usually about 5 minutes) and being in Florida, there were times that I was following along on the internet because I had no signal. One game I even had to fully listen to on WGR streaming.
So I think the NFL, once the Directv deal expires will be shopping out the Sunday Ticket package to all providers, just like they did with the NFL Network. They want to hit on all fronts, be it live TV or digital distribution. And the rumor of Google bidding on it (or wanting to) would go a long in supporting not only their Chromecast and Android platform, but this little project as well.