Judd made Marfa and died before it ever became what it was today. Secretive group of artists and the like came later and in the end, all good towns need an industry and Marfa’s real industry is tourism of people coming to see the art and related art that has sprung up.
Even terralingua has a restaurant with a two hour wait now. Tourism is the only real driver of a small town booming imo.
Marfa also does not have a lot of services that are needed for anyone older than 50, like a hospital.