Really? It takes a ridiculously long time for anything to enter the public domain. The original intention of copyright was to incentivize authors. It was not intended as a means of passive income for corporations, profiting off works that were made long after the death of the original creators and their immediate descendants.
The issue with MTV taking down its archive has nothing to do with copyright duration. If Netflix takes down its archive tomorrow you will say copyright is too long again. You can say it every time something is inconvenient to you as consumer (not producer and copyright holder). So in the end you will argue for elimination of copyright.
