I'd love to see this data that shows that it'll never be "worthwhile". I'll wait.
I would like to see evidence that it will be, considering that you were the one who brought it up in the first place.
For most people, their phone more than suffices as their music player.
Second, Apple Music isn’t profitable. It’s there to lock users into the apple ecosystem. Selling cheap hardware to spur the sales of a loss-making service defeats the whole point.