The point of the offer is for the bank to signup new customers. I make money from cashback and save money on ATM fees. The bank won't make much if any money o

The point of the offer is for the bank to signup new customers. I make money from cashback and save money on ATM fees. The bank won't make much if any money on me, but I'm not the average customer. Many of the new customers will carry a balance, transfer a balance, and/or invest & trade with them. This makes the bank money. Now if everyone paid their balance in full, this offer wouldn't exist, but of course this doesn't happen.