Regarding their pricing to low-touch customers, like anyone just signing up on the website, yes, it's a very good margin for a payment processor. But the trick is that nobody processing a million a day + is going to pay that. They'll negotiate, hard, or change providers. I suspect most of them are in more traditional cost plus contracts: 5c-50c take per transaction, even though the entire bank processing fee is counted in revenue. In those cases, the local tax would put SF companies at a major disadvantage vs Adyen, which doesn't pay a tax on revenues.
Given that Stripe is already not a major player for those very large companies, 1% of revenues on merchants that have high average transaction sizes means they might as well not show up to the negotiating table, as their break even point will be more expensive than other's best offer.
Given that Stripe is already not a major player for those very large companies, 1% of revenues on merchants that have high average transaction sizes means they might as well not show up to the negotiating table, as their break even point will be more expensive than other's best offer.