Austin is no comparison to Sparks regarding employment options. But if Tesla needs 10k workers (as Elon mentioned on a recent tweet) for the current phase of Austin construction I wonder if by the time he has starlink, neuralink, boring co, and a couple more phases of Giga done whether Austin will see the same labour shortages.
If I remember my Uni textbooks correctly, secondary employment effects from factory openings is ~5x the number of direct hires - summing that up could lead to a couple of hundred thousand directly or indirectly employed by Musk industries. In a city of ~2m (Greater Austin) it would still tighten labour supply quite a bit.
It points to a gigantic boom in Austin over the next decade.