Based on what I see in the market with other billing/subscription providers, they all do the same thing (rev share). Since these businesses are not the payment gateway they try to do a revenue grab with the % share.
I hoped Stripe would be able to disrupt this by already being positioned as a payment gateway and offer this on top in a transactional model....
Hope they rethink this strategy. And no first $1MM isnt going to cut it. Any serious business will see this as a growth challenge. Backend billing flows are challenging to build and once you are committed to this you are locked in for quite sometime from the roadmap perspective.