Texas and OU (especially Texas) are in for a rude awakening when they join the SEC and are going to take some lumps. If you’re TCU or Texas Tech you have to hope that Texas misses a bowl game or two and generally just becomes mediocre for long enough for you to eat into their recruiting in Texas a bit.
Also, for Texas kids that want to play P5 football at home in front of their family, in Texas and not flying all over the southeast, I think it provides a recruiting opening there as well. The kids who had their hearts set on playing the SEC already had the chance to do so at aTm and LSU.