Originally Posted by
uncommonsensical
intuitively, that seems highly unlikely. but, anecdotally, it inexplicably seems the case?!? 12m/year in real money cash back is a big #- and a profoundly money losing relationship for amex; as the people doing this are not the type to be making it up to amex with a ton of 1x profitable spend on a bunch of other cards. though spg may fall into that category. but even then, hard to imagine the customer being profitable.
I do not have any numbers to back this up, but I would imagine that 99% of BC users are MSers. I mean, who else actually finds out about this card's application link?
That being said, Amex probably keeps us on because we represent swipes. We probably spend more on Amex than 99% of their other users. This is good for Amex because they can talk about "we have X amount of customers" or "our card is used to spend $Y every day". That probably gets more merchants to accept Amex and drives more business to their "premium cards".
Just a guess. I could be wrong.