Should Beatles album become public domain?

The BBC has a about copyright expiration, centering around the expiration of the copyright on the Beatles' first album, as well as recordings by Elvis Presley, in 2013. Record companies want copyright extended because they make so much money from the sales of big-name 1960s recordings even today. They're also terrified of losing even a penny to digital piracy. Which brings me to point out a sad state of affairs: Not one recording company or pundit has mentioned the great benefits of the Singing Nun's albums becoming public domain. Sad.