[darawk]

First sale doctrine has nothing to do with this. First sale doctrine applies to resales, not the initial sale.

[shkkmo]

Nope.

First sale doctrine explicitly limits the restriction that the seller of a copyrightable work can place on the buyer.

It is illegal for you to sell me a book and say "you can't let any of your friends read this copy of this book" because that violates the first sale doctrine.

[darawk]

I'm aware. But the fact that limits exist to copyright does not in any way show that this particular limit exists or is good.