I wouldn't be surprised if many hotel owners, planners, etc didn't know what an "HT22 encoder" is, or that they were a rip-off. "Expensive proprietary key card system" rings everyone's bell.
Yea, good point. Most of the little mom and pop hotels know, due to dealing with them on a daily basis, but at even midsized hotels you rarely interact with the encoder directly -- only when it breaks. The messaging needs work, for sure.