Many talented people don't want to relocate for work, and companies are realizing that. Distributed offices are becoming more and more of a thing.
At one time Armonk, NY and Maynard, MA were the center of tech too.
It's will be a long slow death by a thousand cuts.
I'd recommend not moving to Central Texas, by the way. Water availability is going to be a huge issue as the population continues to increase. Cities aren't feeling it yet but the small towns on the fringes definitely are - and the issue will continue to spread.
My point was more that there's probably 8-10 metro areas that fall into the "second-tier", but Austin somehow gets pretty consistently thrown out as some alternative to the valley.
But the numbers play out a bit differently. In terms of VC investments, Austin is yes..second-tier (really 3rd, b/c NYC, LA, and Boston make a case for being the 2nd and everyone else is well behind them)..right there with Miami, Chicago, DC, Philadelphia, Atlanta, Dallas, etc. In other words...it's just a regular city that has an ok tech scene.
Not to say that VC money is the only metric by which we should judge, but it's a pretty decent barometer.
Google is expanding their Mountain View and building a massive new headquarters
https://sf.curbed.com/2017/3/8/14858200/google-headquarters-...
Google is also expanding into San Jose
Apple just recently completed their spaceship campus
Facebook is massively expanding their Menlo Park footprint https://www.bizjournals.com/sanfrancisco/news/2018/03/15/fac...
In addition, they signed the largest lease ever in SF https://sf.curbed.com/2018/5/14/17353094/facebook-park-tower...
Salesforce recently opened their new 60 story tower in downtown SF http://www.salesforcetower.com/
And I haven't even touched upon continued expansion of Uber, Lyft (which opened a new autonomous division in Palo Alto), Airbnb etc.
Austin is a bit player in the tech scene. The only other alternative right now is Seattle.