I live in Australia when I first signed up for a credit card through my bank they issued me with both a Mastercard and an American Express card linked to the same credit account. It seemed to me they really wanted to push Amex as they offered higher reward points etc for using it, the problem was almost nowhere accepted Amex whilst Mastercard "just worked" everywhere.

Eventually my bank cancelled the Amex card and they no longer offer American Express. I never really noticed because I hadn't used it for years at that point.