[surfacedetail]

The defendants will evidently claim transient copying.

[Retric]

I doubt these companies constantly downloading the full training set rather than keeping it in a database somewhere.

Hard to argue keeping a copy of some copyrighted work indefinitely counts as transient.

[surfacedetail]

> I doubt these companies constantly downloading the full training set rather than keeping it in a database somewhere.

Precisely to argue for transient copies, they don't need to keep terabytes of data stored.

>Hard to argue keeping a copy of some copyrighted work indefinitely counts as transient.

You're assuming that they're keeping the works indefinitely, which again is not the case.