apple hasnt started selling records/producing music either
They dont have to, the deal was on music, thats why Apple computers tried to buy Corps out with a $1 million offer, actually the offer was for a relative pittance. Apple computers agreed they would not move into the music business and that is what the case is about.
point is that it isnt really affecting apple corps business - they are just money grabbing
The Apple name and logo is regarded as property, if one side has broken a legal deal then the other has the right to seek compensation, thats just good business practice.
Every penny going to Apple computers is one penny not going to some other company and Apple Core have more than the old Beatles records on their list.