Libraries operate under the doctrine of first sale (i.e. they own the copy, therefore they can lend it). This has never extended to lending digital copies, nor

Libraries operate under the doctrine of first sale (i.e. they own the copy, therefore they can lend it). This has never extended to lending digital copies, nor did IA claim it did. IA claimed instead that this fell under the doctrine of fair use because scanning transformed the work, i.e. that the digital copies were new works that didn't serve to replace the originals. This is entirely unlike how libraries operate.