[boberoni]

Good points. I had to do some research on the Durbin Amendment [1]. It seems to be a legal cap on debit card swipe fees, which saved money for merchants.

I could see a scenario where Stripe is currently capturing market share with a 2.9% + $0.30 fee, and then starts increasing this fee once it has a monopoly.

However, Stripe Payments isn't a loss leader that's focused on growth. I would hypothesize that Stripe Payments is profitable [2] and that the 2.9% + $0.30 fee isn't a huge sacrifice. If this is true, I don't see the incentive for a monopolistic Stripe to raise the fee.

[1]: https://en.wikipedia.org/wiki/Durbin_amendment [2]: https://www.nasdaq.com/articles/stripe%3A-the-internets-most...