> All that is to say you could never really tease it all out perfectly in practice. Sure, if the folk at Google that coordinate this hypothetical Euro-fine sur

> All that is to say you could never really tease it all out perfectly in practice. Sure, if the folk at Google that coordinate this hypothetical Euro-fine surcharge entirely in person with no paper trail and are confident there will be no whistleblowers. No oversight body with subpoena powers needs to "tease out" any information, they'll directly request the pricing formulas, related emails and underlying data for 2015-2025 and cross-check with consumer payments.