Tom,
Very interesting question, I don’t think I can answer that question for sure today because the area/genre is still in motion. I could see in the next 20-30 years the region becoming more of a destination with the infrastructure to support the area as a destination for golf if the quality of GCA is there to support it. This country and era already has several destinations where you can go play ho hum golf and to me, the pull of the sand hills is the GCA, not the mountains, warm winter weather, the ocean etc. There are several people where the remoteness and getting away from it all does have some appeal. However, I think the overall pull again is the GCA, which is why I think the answer to your question is potentially a strong yes.
Other reasons would be the playing conditions that the prairie has to offer along with the breakthroughs with technology, agronomy and irrigation. As most people know, the Sand Hills is a region of weather extremes and it sounds like the industry is following along. For example the weather in Valentine this instant is 16 degrees, light snow, 15 mph wind with below zero wind chill. Not your ideal conditions for fescue greens.
Also, the Wild Horse model could be emulated over and over in the smaller sand hills communities by building new clubs that the whole community supports.
On another note, I am always amused to what marketing or promotion people make the comparisons and statements that the golf and facilities are just like Scotland or Ireland or some other location. I think the courses of the region are beginning to stand on their own, which is another reason the answer to your breakthrough question is yes. Just my novice opinion.