I suspect price is a good reason. I don't care if Sonor pedals are 3 times better than any other pedal out there they are not worth the ridiculous prices they charge. Hopefully someday they will come down and compete with the IC and DW5k of the world but I would not hold my breath. Hell even come down to Axis prices and they may sell a few more. Not sure why Yamaha's are not as popular though.