Don't personalize things. DL isn't a person and you are a # to DL. Nobody is sitting at a desk wondering why revenue from you dropped. At a micro level, people stop flying for many reasons. At a macro level, DL watches what happens to everything and might, on an automated basis, chuck some promo your way to see what's up.

We're moving to a domestic system in which there will be three legacy carriers. Same sorts of threads on UA and AA with people saying it, "lovin it over at DL". That's a wash.

Real question is whether carriers such as B6 make inroads with a premium product.