So far CO has been the prejudiced part, when it came to coop`s , codeshares etc. , so blaming AF, because they do not like CO is simply inaccurate.
KLM jsut announced to add a 44 seat all C BBJ 6 times a week from AMS-IAH in addition to the daily 74M and 5 or 6 times weekly 767, so there is huge demand in C class seats.
It would tremendously surprise me, if CO reduces capacity on a hub to hub route, where they make money to put the plane on a thin hub to point / secondary market, where they lose money, like they do in TXL for example...