[patrec]

Do you have a good example of a pre-digital private everyday transaction where people would use "buy" to refer to entering in some complex licensing arrangement which did not grant any transferable rights?

What you write is true and I see where you are coming from. But my contention is that what you refer to as the "specialized meaning of buy" was pretty much the only meaning an average person would have used it in. And that such a person's reasonable and natural assumption when first confronted with a "buy" button for an ebook would be that it pressing it would confer analogous rights of transfer as buying the physical copy. And furthermore that courts and regulators allowing this assumption to be violated was a major oversight. If for no other reason than that it is foolish to the extreme to bring about a system where a single dominant entity having a bad day could in a blink wipe out a large fraction of accessible books.