Maybe you can provide clarity on ACH risk. Seems like businesses have most of the risk there.. and not the billing system (keeping the gateway out of this).
Secondly, transaction/user based models are also aligned with customer incentives. With growth, customers will execute more transactions on the system.
Frankly, Smart recovery is an area where I can see you can ask for % share. Other features like payment methods etc sound transactional again.
Finally, Stripe has a payment gateway business already. This will ensure growth on that side of the business. Optically this seems like a revenue grab. You have the opportunity to disrupt the ecosystem.
Thanks for responding to my comment. Appreciate the interaction.