Well, the EF 100-400mm from November 2014 sells for 2.399 $ at Adorama at the moment. And you'd like Canon to price a newly developed, 5x times zoom (instead of 4-times) faster focussing, better minimum focus distance lense to sell for less?
I have a hard time accepting a 33% mark-up (in Germany) in comparison of these two lenses, but actually wanting them to price it cheaper than a six year old lense is just absolutely unrealistic and child-like wishing/ thinking. I can't even take this complaint seriously to be honest, and I'm saying that as a consumer who views RF pricing very critically.