"But making commercial use of vast troves of copyrighted works to produce expressive content that competes with them in existing markets, especially where this is accomplished through illegal access, goes beyond established fair use boundaries."
I honestly can't see how this directly addresses fair use, it's a odd sweeping statement. It implies inventing something that borrows little from many different copyrighted items is somehow not fair use? If it was one for one yes, but it's not it's basically saying creativity is not fair use. If it's not saying this and refers to competition in the existing market they're making a statement about the public good, not fair use. Basically a matter for legislators and what the purpose of copyright is.