“If your users need to expense the subscription, or their company needs an invoice, or they want to pay annually via bank transfer — none of that works through the App Store. That's a B2B billing reality that makes web2app mandatory regardless of what you think about fees.”

B2B billing needs are a compelling web2app reason that has nothing to do with fees

Petit highlights enterprise and prosumer use cases where App Store billing is functionally broken: corporate purchasers need VAT invoices, IT procurement needs bank transfer options, expensing requires receipts with business details. None of this is available through Apple or Google billing. For apps with any B2B or prosumer segment, web billing isn't a strategic option — it's a prerequisite for serving that audience at all.