while it seems a foreign concept to us PelletFans, I think jacksdad has it right. People are intimidated by the price, by the technology, and by the process/time/skill of BBQ. Add that to the need of constantly replenishing pellets and it's deal killer for most.
We know better, we know propane and charcoal have to be replenished too. We know how easy it is to produce excellent Q. Even among my closest friends, 2/3 are intimidated by the process.
DK