And since Amazon now also came out with such a payment button, how are they going to compete against a company which already has an enormous user base with their credit card data on file?
That they were able to raise 1B$ is a true dotcom era déjà vu.
Amazon's multiple attempts to foray into payments as a service have been failures. For multiple reasons. I know this because I worked on one of their largest payment services; it was meant to be part of AWS offering but disbanded since. Since then they have attempted checkout button; payment button; square like device and what not.