Google Pay, Amazon Pay, and other attempts by big companies to shoehorn their way into this market have to contend with the fact that PayPayl came first, and is "good enough" for the vast majority of people.

The real innovation in this space seems to have come from companies replacing more layers in your typical e-commerce stack, like Shopify.

For me, Apple Pay is the only "new" payment processor that actually competes with PayPal because Apple made the user experience a lot faster and more convenient.