I think you missed the part where they're losing ALL of my business, including dozens of flights a year.
>I assume there are lots of smart people working at airlines that can work out which of their policies earn and lose money, especially now that all the competition is minimal except on the most popular routes.
I assume they think customers with lots of miles banked won't go through the effort of dropping them entirely. I think they're wrong.
When you're losing customers that have million miler+ status, you've made a pretty poor decision.