How Do You Build the Next Austin, Texas?

If music tourism is a multi-billion dollar industry, why aren’t there more music cities like Austin? And Nashville, New Orleans, Athens, and Portland?
Why are cities crowding musicians and cramping scenes, instead of fostering their organic growth?
Those are challenging questions for city planners, especially those struggling to foster artistry against the crowding effects of gentrification and high-priced living.  Artists live cheaply; cities are typically expensive.  Artists n