Canada, the 5th largest supplier in the world - can easily continue to supply the US without Texas' oil. Texas could do like ISIS and start selling oil much cheaper. But in the end it would be a disadvantage for the long-haul. Texas buys all of it's drill equipment from outside the state. And you can bet that the cost for equipment and replacement parts will spiral as Texas drillers demands for equipment goes up.
Right now the Texas Permian Basin Oil revenues pump well over a Billion dollars a year into State University coffers. That's gonna hurt Texas State Universities when that money has to be diverted.
But really ...just try your best to consider:
Like any production line operation. Somebody may come up with a brilliant way to make one portion of the line work a 1000% more efficient - only later to find out that other parts of the line have been negatively impacted and the the bottom line production rate is reduced. Think about it.
There can't be a SS in the Republic of Texas. There is no revenue collection system with any type of reserves that would even come close to being sufficient to nearly 10% of the US's population.