"I am pleased to say that Apple has made a decision to pay for all usage of Apple Music under the free trials on a per-play basis, as well as to modify a number of other terms that members had been communicating directly with Apple about," said Merlin CEO Charles Caldas. "With these changes, we are happy to support the deal."
The lack of Indie signup was the real reason Apple changed direction on royalty fees, Swift is just getting the credit.
Would have been fine for Apple Music to launch a free trial without a Taylor Swift album music lovers don't care about but a disaster to launch with 50% of Spotifys music catalogue and a depleted search for music fans who actually like a diverse range of acts to find. The service would be DOA and the internet would be full of "Apple music doesn't even have artist X".