Why does our beloved genre and its epiphenomena keep breaking through into the mainstream? IMO, because we have so many cool toys, and writers have near-zero resistance to them. The privileging of the mainstream was a social construct built around a distribution channel, and Main Street’s been in bad shape for a while now, but there’s nothing theoretical about a case of the plot bunnies. Ask any writer who’s had one. The only way to get rid of a plot bunny, even a disreputably fannish one, is to write it.