I think the reason pedals survive better in the European market is simply the music. If you listen to what most organists play (and even to the originals they came from), you won't hear much beyond simple root, fives or simple walks. American music, OTOH, from R&B onwards, has relied on MUCH more complicated basslines with syncopation, pops and pull-offs, slapping, you name it. VERY tough to nail on pedals.

You've got to be quite the virtuoso organist to pull off even a simple Cameo piece, or a modern dance track, or most Motown, etc.. Country... yes, there's a style most of us could handle the bass pedals on, but most of the rest (I played pedals for years in England) would be a SERIOUS challenge.

And, of course, when you are talking pedals with arrangers, how can you walk with the LH (supported by pedals, a la B3) and still trigger the chords? For perhaps adding a slash root to a chord input, they might be handy, but that's a lot of money to do something you can do just with an inversion change or Pianostyle chord input...

Got to admit, as much as I used to use them, I was always MORE than ecstatic every time my bandleader would hire a bass player and free up my feet and LH.