The transformation of Old Texas was greatly different than what happened in California. Yes, there were big city bastions like the tri-border El Paso-Juarez-Las Cruces and the more central Dallas-Fort Worth Metroplex that were worlds onto their own, but Texas still had a strong rural tradition and the two worlds had not yet gone to war with each other over the future of the State. Perhaps that is because they had a common enemy in the Mexican Drug Lords that they continued to fight. Big city central police forces and distant county sheriffs worked together on a daily basis to interdict powerful drugs and sex trafficking rings. There were many other reasons of course, but the combined result was that Texas did not break up the way California did. They did break up, but it was a far more political break up than a societal one. More than one of the new Texan States came into existence simply because they wanted a pair of Federal Senators that represented only them, in fact. Not that they admitted it at the time. That would have been an overabundance of political honesty, you know.