You might want to separate the right to copy and the obligation to give attribution. I know of no one who would support the abolition of mandatory attribution. But abolishing the restrictions on copying itself doesn't seem so unreasonable once I say "but you would still have to name the original author!".

To me, a reasonable system would be to authorize everything, provided you give proper attribution. You can copy, but name the author. You can parody or plagiarize, but you have to say so. That way, we keep a right to recognition, at nearly zero cost to society. I think this is both morally acceptable, and economically feasible.