I mean, I don't think it unreasonable that the Beatles should continue to receive money for copies of their performance of Hey Jude, but why can't another artis

I mean, I don't think it unreasonable that the Beatles should continue to receive money for copies of their performance of Hey Jude, but why can't another artist do a cover without having to pay them, 50 years down the track? IP was supposed to aid creative expression, not stifle it! This extension only applies to their recordings (as performers). The songwriting copyright is already set at 70 years, so nothing is changing there.