Even if you did get rid of copyright (which they don't actually want, they just want a carve out for their LLMs) it wouldn't matter for anything owned by major players. For example, there was a gap in US music IP law for like 40 years for anything from before the system was nationalized in the 70's (IP rights were a state-level concern for music before that) but if you legally copied a Beatles album from the prior state system, the rightsholders would still sue you into oblivion by sheer force of lawyers and infinite money. In a system that allows the rich to use money to just grind you into dust with no recourse, what is actually legal is somewhat irrelevant, it's how many dollars of capital are you pissing off.