I think this fits well with Phish's isolated monoculture. I also started listening to Phish in the early 90s and have only seen 30 shows or so. Every time I go to a run it is very comfortable. There have been times I havn't seen them for a a good chunk of a decade and the shows feel the same. Eventhough jams have been part of their much of their history variation in musical style hasn't been. That leads to homoginization that makes for great vibe music.