Square, Stripe and maybe even Coinbase to an extent. You could even throw in Amazon payments and Google wallet as well. They are in a tough spot, and their bran

Square, Stripe and maybe even Coinbase to an extent. You could even throw in Amazon payments and Google wallet as well. They are in a tough spot, and their brand is always taking damage from how they run things. I think they will die from not one big dog taking over, but a bunch of smaller companies each taking bites out of their market share.