There's a hole to be plugged but they are looking at the wrong side of the....equation.
Streaming, even in the subscription form is a dud. The money being brought in is less than the cost in royalties. Apple likes big margin markets and subscription streaming has negative margins. Apple got sold like a cheap hooker.
Two things have come together that will set the trend: super inexpensive flash storage, and high-res DSD, FLAC and other formats. This could be a kinda new category for Apple. New iPods with 250GB+ storage and non-compressed audio formats. These pocket music players are being sold right now mostly above $500 and as much as $2,000 for the device. If iTunes started delivering those high-res formats they preserve the power of iTunes and Apple could sell another high margin piece of hardware.
With the hiring of Tomlinson Holman I think Apple is on this problem. Tomlinson will plug the right hole and Apple will squeal with joy as the money starts flowing in from music once again.
So why did Apple need to spend $3B on Beats to do this?