Parallel societies do exist. Talkeetna, Alaska is a good example. I recall reading an article that claimed Talkeetna had among the highest per capita percent of the population with a Ph.D or higher education. The article pointed out that all were highly educated drop outs from society. Of course, this is the same little village that has had a cat at their elected mayor for decades. Another parallel society has formed in Homer, Alaska formed by “end of the roaders.” These were people from the 1970s, plus or minus a decade, who drove north to Alaska until they ran out of road. Lots of good books about this culture too.