a) "Oh gosh, apparently having the artists/labels taking the monetary risk for us for trying to acquire a strategic stranglehold on the music industry was bad, we should do the right thing!"
b) "Argh! the backlash is bigger than we anticipated and Taylor Swift is causing too much negative PR. Quickly, change our minds before our service and future music profits are doomed. We'll make it back some other way somewhere down the line"
Doing the right thing because you have to is better than not doing it I guess, but I tend to measure a company on whether they'd try the same thing again if they could get away with it... and Apple definitively would.