I think GP point, is that the proposed remedy: “contract between Google and Apple in which there would be anything exchanged of value.” would force Apple ditch all Google services, including GCP. Given paying Google for GCP services would require a contract exchanging something of value.
I know, I’m saying that it is a dumb remedy to “we don’t like BigTech colluding so we are going to force Apple to leave the third largest cloud provider (an also ran) for the first and second largest provider”