It’s farther than you think. Nearly twice the distance from Philly to NYC
what it is relatively close to is San Antonio, another large metro. Probably not close enough for weeknights, but for weekend day games it'd be doable (assuming a retractable roof).
If there was a team in Austin, you'd assume one of the Rangers, Astros, or Austin would have to be in the NL. I don't see all of texas being AL.
Nashville, Charlotte, probably Portland and Montreal I think are all ahead of Austin, barring big Texas $$$ getting involved. Musk could change everything.
Oh - did the google on the distance from Houston to Austin - about 150 miles. A bit further than Philly to DC. A bit further than Dodgers stadium to Petco.