Re: They do (sort of)
Your analogy is defective..
more accurate would be buying some parts for your car, finding you don't need them then taking them back for a refund.
Which you can do
Or buying some hardware from a vendor, finding out its incompatible, then getting a credit note or refund against it.
Which you can do
Or buying something from amazon, finding that its awful, then returning it for a refund
Which you can do
... you get the picture
The only time your usage case holds water is if you want an ISO doc or a journal, and we all know how broken these systems are, so they are a crap example