I really feel sorry for Taylor Swift. The royalties she could be losing from Apple might cost her having another mansion or her own private island. The real losers are the song writers who get paid pittance while the artists like Swift use their works to make millions.
Taylor Swift pretty much records only songs SHE WRITES.
She owns her music lock, stock, and barrel.. that's where her power comes from.
She once told Disney to take a hike when they wanted a piece of her publishing for putting her own music into a project they proposed using her.