That’s not the same thing. In your example, you’re expressing an in-person business, where being present, inside the restaurant, eating food ordered on one visit, is the extent of the use of what was purchased. Unlimited refills clearly mean, for the duration of your visit. No restaurant is saying, “eat your dinner, and come back tomorrow afternoon for more free soda”.
That’s a tangible product analogy.
Here on Fiverr, we’re working with person-to-person contractual project, where the “unlimited” interaction is indefinite, because there’s a written contract promising that that person-to-person agreement is unlimited. An unlimited revisions contract – clearly visible in gig terms – requires the buyer and seller to honor the agreed terms, as written, according to how it is written.
In your restaurant analogy, it is understood that you’re eating the fresh food you ordered now. When the food is gone, and you leave the restaurant, the terms of sale are concluded.
Therefore, you cannot, reasonably, compare a tangible product restaurant visit with a project-based, written contract freelance format. The two are not alike.