Nothing, it's just that if it's illegitimate to enforce copyright in this case, then copyright itself has no meaning. Consider Song of the South, a movie so controversial that Disney wants to bury it. As the copyright holder they have every right to do so to protect their reputation. Because copyright, especially in civil-law countries, is bound up with the broader concept of authors' rights, including your right to protect your reputation as an author, the right to completely cease any further publication of a protected work is intrinsic to copyright itself; without that right, the concept of copyright falls apart.

And if we abolish copyright because it's meaningless -- a move that would be curiously popular among programmers but unpopular among other creative professionals -- how are professionals in art, music, literature, etc. going to put food on the table? Do we just say "let them drive Uber and pursue their art as a hobby"?

A sense of moral superiority for their 'cut throat rationality'