Similar to how going viral with a new mobile game as an indie dev means you will almost immediately be cloned and pushed out by King et. al., removing copyright protections would mean that only the largest and wealthiest artists' and corporations' versions of art dominate the market. Creating something truly new and interesting would become simply a donation of that idea to the powers that be.
The main problem with copyright isn't it's existence, it's that technology has allowed the wielding of it to become too quickly and brutally applied a la youtube's automated DMCA system.