In most DC build outs you're looking for favorable network peering (ie pipe size, latency, or both) and low electricity costs.
If peering is the highest priority, then you build in hot climates and reduce your cooling costs as much as possible with outside air when temperatures are cool (is at night). They've been doing this in Las Vegas for decades.
Maybe that is also the reason for Stargate building there.
- Electricity in Texas is extremely cheap;
- The legal framework and current ruling Texas government is supportive of it;
- Cronyism: The AI companies/execs are in bed with Texas' red neck government;
- The US doesn't care about destroying the environment by the impact of the cooling necessary to run this;
Would you risk doing this in Michigan/Washington or a colder state? Or in California where taxes are hella high and 'woke'?
Texas is the best place you could do this.