I laugh every time I hear an Aggie say that it's Texas' fault that the rivalry game is ending.
Here's the timeline:
Texas asks if anyone in the Big XII wants to get in on a television network.
Everyone says, "No Thanks" (including the Aggies)
Texas goes ahead with a network deal
A&M leaves Big XII to go to SEC
A&M asks Texas if the rivalry game is going to continue
Texas says, "Bite me."
Imagine a group of roommates. One says, "Hey, wanna all chip in and buy a new TV?" and everyone says no. So, he goes and buys a new TV anyway, but puts it in his room instead of the living room. And then the mooch roommate starts complaining that he doesn't get to watch football on the new TV on the weekends.
A&M left the Big XII. For them to blame Texas for the rivalry game ending is purely Aggie logic. Why should Texas, or any other Big XII school/team, bend over backwards to schedule the Aggies for future non-conference games? If nostalgia is the only legitimate reason, you're going to have a hard time selling that. And since college football is all about $$$, why would any Big XII team want to give away free revenue to a team that left the conference in search of more money for itself?