Where does that end? They're taking your payments, making your invoices, why not be an OAuth provider for your users? Host your app? Store and ship your physical products?

I love Stripe. They do one thing well, better than anyone else I have used. It's not perfect for everyone, but anytime someone tries to be perfect for everyone they stop being perfect for anyone.

I don't think it's that crazy to wish for emailed invoices from a payment processor. Unlike the examples you provide, it's a pretty natural and easy add-on to such a service which many providers (eg, PayPal, Square) do.

PayPal and Square are user facing companies. Stripe is currently strictly a developer facing company (I mean look at their home page, they have code samples!).

Stripe provides hooks that allow you to easily send your own invoices--that's a developer friendly feature that maintains flexibility (everyone will want invoices to work differently).

Agreed! Would make sense to have a Stripe marketplace similar to what Shopify has to extend this functionality to those that want it.

That ends with something like Amazon.

...?

Stripe is a payment processor. If you want invoicing, use (FreshBooks|Xero|Blinksale|etc).

"It would be nice if" is often the death of good product design.