I'm sorry, but Google has already dealt with this issue, and they can deal with it again. Quota is a thing there, and they already have process for billing and

I'm sorry, but Google has already dealt with this issue, and they can deal with it again. Quota is a thing there, and they already have process for billing and managing access to Google resources by entities which are quasi-internal because during the "Alphabet" transition many things that were formerly internal -- such as the e.g. "Access & Energy PA", which became "Access", mostly Fiber ... which I happened to work at the time -- became quasi-external, and they started having to pay Google-proper for Borg usage, etc. It's not impossible at all for Google to set up process, billing, and data access boundaries. They just naturally have an interest in avoiding this completely. Which is exactly the point -- right now their ads products in particular have way too much insight into both the buy and sell side of the equation, and Google has gone out of its way to dominate the entire ad supply chain using this knowledge. Forcing an infrastructure separation and an organizational separation for the ads businesses there would do a lot of good for the market as a whole. And not sure we should care too much about how Google does out of it. They're swimming in ad revenues.