That's the answer to the question "why are these cards offered at all", which was not my question.
My question was, "why are even the accounts of people who consistently cause them a loss still kept open?", which this doesn't answer.
2. I bet government regulators might be a bit peeved by a company that systematically cancels customer accounts for behavior which is within the advertised terms of the agreement. Usually regulators frown upon luring customers in with an advertisement for a product/service and then purposefully sidestepping said product/service.
3. It’s probably such a small number of customers that’s it’s just not even worth their time.
2. It need not be against their terms though? They could easily specify hyper-optimized usage in their agreements as something that might result in account closure. This is already done in a lot of other cases; they could do the same here.
3. I don't know about that. Just look at the sheer number of sites that explain how to maximize your credit card rewards/cash back/bonuses. They wouldn't seem to be there if the audience for them was so vanishingly small?
If you believe so strongly that it is worthwhile for them to do this, then perhaps you have an idea for a lucrative career.
But as long as credit card fraud in the US is measured in billions, I’m going to guess that any manpower which can be assigned there is way more lucrative than any manpower assigned to demonizing their honest customers.
These companies have very, very smart people working for them, analyzing all the data they have to come up with a product and its limits. They know x% will not be profitable, and they include that in the profit calculations.
Why dont they simply cut off the non-profitable customers? Because people don't like this and they'll quickly tell their friends "Don't sign up for Discover, they cancel your account if you don't make them money." It wound be all over Slickdeals and blogs. No credit card is going to survive cancelling accounts for using their credit line in totally normal ways.
Just like a store could say "for every 10 sale priced items you buy you must buy a full priced item" - but then nobody would shop there.
Think about an all-you-can-eat buffet. Some poor soul is gonna starve themselves so they can splurge and have a "good deal" on a lot of food. Most people will not, and the business would be in trouble otherwise. They still have to serve the patron who's eating a lot, because what kind of buffet would it be if it was "all you can eat, until you're eating so much that we're no longer making enough money"?
Or, some retailers sell items at a very low price, just to get people into the store in hope of them starting to buy more. Nothing stops you from getting into the store, getting the deal on those items and not buying anything else. The store may be losing money on you but they can't stop you from purchasing the item at the advertised price.
People who choose to spend their time and energy chasing deals to hyper-optimize the benefits on their credit card savings are entitled to their savings. Companies (credit cards or otherwise) are just interested in the total outcome of their operations anyway, not on making money off of every single customer. (Besides, even just defining what is a "profitable customer" is a hairy problem.)
