I believe that the red states are going to languish for the following reasons:
1) Brain drain as young ambitious people leave
2) Public services (education, roads, etc) decrease in quality, increase in expense
3) Older folks increasingly capture all of the economic gains allowed in small towns through consolidation of local political power
It was once possible to be young and ambitious and moderately wealthy in middle America by starting and expanding a small business like a franchise or a car dealership, but if you try to do that now, you'll get crushed in city hall pretty much every step of the way.
I am very open to discussion/debate on this topic if anyone has differing views or questions.