I don't think he's upset because Stripe has a new competitor. I think he's upset because MasterCard copied every little detail of Stripe, down to the wording an

I don't think he's upset because Stripe has a new competitor. I think he's upset because MasterCard copied every little detail of Stripe, down to the wording and the little UI details. I would be upset, too, if a large company released a product that was a mirror image of mine.