Is there anything interesting or novel about this exchange, other than its headquarters are located in Texas? From what I can tell, the primary data centers will be in New Jersey like all the others.
Reality is there are tax and regulatory advantages. The courts are setup in a way that is favorable to business. They read a very strict interpretation of contracts which is good in some scenarios.
Texas politics is a train wreck, but their bureaucracy is pretty good for a business - things like permitting and other regulatory processes are faster. They also will firehouse you with incentives.