Hardly unique to Texas. The whole SW has this problem. Hey, Las Vegas, the Venetian probably wasn't the best use of what little water you have.
You forgot to mention the
Bellagio as well. But really, the water usage for those hotel gimmicks is negligible next to the general consumption in the metro area.
There are currently two medium-term strategies to solve the problem here. One is a planned pipeline that sources from a deeper point of Lake Mead than the current two, which are at risk of sucking air as the lake's water levels have dropped over the past decade. The second plan is to draw water from the tables upstate. This would be costly though, and the rural communities are fighting this plan tooth and nail.
Anyway, back to Texas.