Actually, the constitutional purpose of copyright laws has been twofold:
One of the most recent changes came about because the copyright on Mickey Mouse was about to expire, and with Walt Disney long dead his corporate successors saw a possible gravy-train interruption.
The "antiquated" laws were fairly good, and the 1976 change briefly shifted the balance towards the creators. That has been thoroughly overthrown both in law and in fact. For instance, in music songwriters whose material is used by the two surviving mega-majors normally must kick back a part of their writers' royalty to the publisher (a subsidiary of the entertainment conglomerate). Musical groups negotiating with these conglomerates must pick a lawyer from a list provided -- all memebers of which are loyal to the conglomerate, not to the de-jure client.
It's amusing in a way. The entertainment conglomerates make crap and treat the creators like crap, and then bemoan their crappy results, and go complain to Washington for more special privileges. Just say no to TV and popular music -- cut off these creeps' air supply.
d.o.l.
Criminal Number 18F
PS: you can probably go out in the nearest small city and listen live to better entertainers that will come to the stadiums this summer, in any genre you like. There is a LOT of talent out there.