Eliminating copyright doesn't mean they'd be allowed to lie about who wrote what they were publishing. Anything an artist creates blowing up and gaining wide appreciation is very good for that artist's future prospects. An artist who is spreading their work for free anyway is much better off in the scenario where there's no copyright and everyone understands the need to tip / patronize their favorite artists.

The core concept of ownership and copying needs to change if you want anything resembling what IA did to be protected. Because the underlying premise behind copyright legislation that that any unauthorized copy needs a specific exception to be legal, and it's impossible to use digital files without numerous copies.

That's starting from scratch.