A new building in that area certainly be the best for current employees (many of whom are probably living closer by based on the current location). Though companies frequently don't take that into account.
The previous story did mention
"IBM will strongly consider moving elsewhere in The Domain, Henderson said."
https://www.bizjournals.com/austin/n...mo-link-block1
The community impact story is kind of annoying as it doesn't link the press release it's referencing (and what it links to doesn't mention Austin at all).