Similarly, if we reserve the word "unlimited" for things that are actually, y'know, unlimited, then the word again becomes more useful.
Flagrant disregard for commonly understood definitions of words when it's convenient to one's cause is a concrete example of a tragedy of the commons that makes a language less useful overall.
It sounds like you object to the standard usage of these words, which doesn’t seem like a productive position. Olive Garden isn’t actually going to give you unlimited breadsticks either.
Google advertised unlimited. By definition that means without limits. To then put limits is to make the plan limited. Instead of doing thesemental gymnastics to defend Google might I suggest that the people storing petabytes of data are taking advantage of Google's goodwill but not doing anything inherently wrong. That being said Google calling the people who use petabytes abusive is hypocritical, and wrong. Google wants a certain type of user that overpays for "unlimited" and uses a pittance. Instead Google found that they advertised themselves into a pickle and are trying to blame people using the service as advertised.
Google can either advertise unlimited and live with the costs or advertise what they're actually willing to provide. Users using a service within the advertised constraints is not abuse.
I'm not talking about literal or pedantic correctness here.
The antonym of unlimited is limited. You're using some impressive mental gymnastics to justify advertising a product with one word while providing the opposite.
If the literal interpretation of whatever hogwash the marketing dept is spewing is obviously impossible then I posit that the companies who do so are deliberately misleading consumers for profit. That seems to me to be an open shut textbook example of false advertising. But then neither my job depends on not understanding this distinction, nor am I overpaid lawyer employed to a company engaging in these patently fraudulent activities.
Olive Garden, after all, cannot actually provide you with “unlimited breadsticks” either.