San Antonio will never be the market for an NFL or MLB team with the Cowboys/Texans and Astros/Rangers ruling the market. They tried that with the Alamodome and failed to draw an NFL team, and now we are lucky to show a ing bowl game once a year.
Austin is more likely to draw another major league team than SA at this point.
San Antonio does have the benefit of being most successful and storied NBA franchise in Texas, and that's why it will continue to be in San Antonio.
The metro is ing huge and only expanding into New Braunfels, San Marcos, Austin, etc....which is why this effort from the Spurs B&E group is smart to tap into that market, and not a sign they are trying to jump ship.