Very few entrepreneurs are moving here exclusively for Fiber, the real attraction is the super inclusive community and the extensive resources available to startup founders. Every single person I have met here is so unbelievably welcoming and will go out of their way to help you out. The Fiber is just icing on the cake.
Another huge reason people have been moving here is cost. My team just moved into a 1800sqft house for $1100/month and fiber ($79/month) gets installed in a few weeks. So much cheaper than Boston..
Oh yeah, and the Kansas Angel Investor Tax Credits [http://www.ksrevenue.org/taxcredits-angel.html] are great.
And I am paying less in rent than my friends in DC would pay for a broom closet.
But I think the idea of "arbitrary rallying flag" is a good one. This could be a really great way to evolve the KC tech community. They now have some validation (both Google and Brad Feld have invested there), and there is some excitement.
I think it's a good thing, and I'm excited to see what happens