...hmm, you're likely right, but I'm actually quite curious to see if anyone's willing to challenge that in court if it happens given that Google doesn't really give anyone an easy way to migrate an entire life to another service.
Nice. My google-fu's failing me on finding any services which can import some amount of it and re-establish equivalent services, which suggests either some important details are missing (e.g. account configs) and/or no one's seen a business case for setting up that kind of migration service with any of the other major platforms e.g. Microsoft's cloud apps.