Advertising for the lousy products.
Bozos in music industry make deliberatelly warped sound on CDs, so when it is ripped to shallow MP3 it gives an illusion of heft.
And they expect that people will shell out $15 for this crap?
Or reissuing the same albums over and over, to fix shoddy mastering in the 1980s and the 1990s.
Music business has to make up their mind: do they sell RIGHTS to listen or they sell PRODUCT?
If they sell PRODUCT, buyer becomes THE OWNER and can do with it what he/she pleases.
OTOH, if they sell RIGHTS OF USE, I have the right to bring faulty mastered Kind of Blue and get replacement free of charge, or replacement if "best sound forever" disc becomes unplayable.
File sharing is not new, it exists for the last 50 years and it actually helped music business. It was R2R and cassette taping operated over the sneakernet.
The Key problem of the music industry is unprecedented greed of the people who have no ears to hear their own product.
The industry would never let you “upgrade” from Sgt.Pepper v.1967, v.1976, or v.1988 to Sgt.Pepper v.2008. You need buy it for the full license price as anyone else.