> The 'victim' here clearly knows they are taking advantage of a situation

The victim is "taking advantage" of an advertised feature of the service they paid for, and has done nothing wrong. The fault lies entirely with Google for advertising unlimited storage, knowing full well that no such thing exists. Same with every other cloud storage service that once advertised unlimited storage. Just because someone who understands how computer storage works could probably figure out that it wasn't really unlimited doesn't make it not false advertising.