The only difference is whether technically copying happens, because controlled digital lending has the same results as a system that involves no copying. It doesn't have the common definition of copying where two people can access two copies at the same time.
If IA came first, and libraries came second, would we refer to libraries as having a technicality/exception that lets them be legal?
Though I suspect that if libraries were invented right now they'd be declared illegal.
Please look at what I'm actually saying instead of snapping off replies that don't address my point. (And yes I edited in another couple sentences but the part about libraries not copying was in the original version of both those posts.)
(You're fine editing; I edited too, just for clarity).
Let me try making my post a list of bullet points.
* Libraries are allowed because technically it's not copying, and otherwise would be very illegal. Agree or disagree?
* Controlled digital lending is only copying on a technical level, not in the traditional sense where more than one copy can be accessed simultaneously. Agree or disagree?
* If CDL could somehow remove that technicality and do pure digital transfers, it would be fine. Agree or disagree?
* A better version of copyright would ignore that technicality. Agree or disagree?
If your whole point is that we could tear down all of copyright law and replace it with a system that allowed IA CDL, then, sure. We could do a lot of things. I'm not really here for that argument (because there just isn't enough to nerd out about in it, not because I have any problem with the exercise).
But as for the law as has existed in the United States for the last 50-odd years, I'm reminded of the words of a young Baltimore entrepreneur, who infamously said "you want it to be one way --- but it's the other way".
No, no, not at all.
In this situation I just want to change the definition of "copy" slightly.
(And to point out that slightly different definitions of terms would make libraries illegal. There's nothing special about the current definitions. In particular they're not the most straightforward definitions at all. Again, none of this is about radical change, just looking at where small tweaks would get us.)
But it could count as distribution. Copyright covers that. Library style distribution could be just as illegal as CDL style copying, by barely changing anything.
Except when it is. Laws are not computer code and it's precisely the court's job to interpret how they apply. This can include overturning previous interpretations. For examples see the recent ruckus about supreme court decisions changing what people interpreted as fundamental and accepted rights.
The copying only exists on a technical level because digital stuff is weird. Only one copy is usable at a time.
So either IA is guilty of copying because of a technicality, or normal libraries are only allowed because of a technicality/exception. (Because normal libraries fail the transformation test, they fail the amount copied test, they fail the expressive nature test, and they fail the market impact test.)
I want to believe the former is correct. Either way I believe there should be a way for IA to access that same "this isn't considered copying" territory somehow.