The most likely scenario is that those away games will be sold by Tech, TCU, etc. to the LHN for distribution. (KU did the same thing for its home FB game with UT) A check from the LHN is worth more than the hassle of trying to start up a competing network.
A network like the BTN makes the bulk of its money from the footprint states - charging 10-20X what they would per subscriber outside of its conference market. Typcially they LOSE money on the non-footprint states - content is usually relegated to a premium sports tier.
Lots of teams have "followings" outside of their home market. ISU in Kansas City, Iowa in Chicago, WVU in D.C., etc. But in terms of network coverage, it doesn't matter. The determining factor is, "Can you sell a cable package this city/region/state that DOESN'T include games from Team X?" If you can, than you don't pay for the network. There are lots of Cyclone fans in KC. But no cable package in KC is going to charge all of its subscribers more just to have access to ISU games.
If the LHN can't get wide distribution in Texas right now, how could a package of teams with lower interest? There's no business case that supports 2 competing TV networks of teams from the same conference...especially a conference that doesn't have a large TV footprint to begin with.
Have you guys ever been at a party and there is that one guy who doesn't get when it is time to leave....?