That would be quite a play. Stripe, PayPal, Venmo, Braintree, Xoom all under one umbrella. The Herfindahl-Hirschman Index (HHI) for online card-not-present (CNP) checkout on that is going to be absurdly high and this will take a lot of convincing to beat antitrust. They will probably have to unwind Venmo and Braintree.
If it's a card-not-present transaction, Visa or MasterCard is making the bulk of the commission and forcing the vendor to take on the risk of a transaction without a PIN or password. At least the others offer the hope that maybe some customers will pay directly from a Stripe/PayPal account, without the high commission and high risk of a Visa/MasterCard network transaction.
They are not. Payment facilitators (like Stripe) are.
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