Having worked in payment systems and processing, I'm well aware of the interchange fees and other fees. However, the specific name for the cohort of users who

Having worked in payment systems and processing, I'm well aware of the interchange fees and other fees. However, the specific name for the cohort of users who paid a very small percentage of their spend (including 0%) was indeed "deadbeat" (at least in the two data warehouses I helped build out), as I'm less profitable than others with less spend. In fact, one issuer (Capital One) actually closed a card I regularly used (~$1000/year annual spend) about 2 years ago, the letter not stating reasons why. I actually called customer service, and they cited that the costs to maintain my account was considered too high. I used them for a specific category of transactions in which the rewards were higher than any other card I had. Though my usage was apparently insufficient to make it worthwhile keeping me as a customer.