The pieces don't quite fit together here - Harry Fox handles a LOT of licensing (they're one of the places you can get mechanical licenses for cover songs via self-service) and I'd assume that a big contract for an organization the size of Spotify would include at least some indemnification for any legal issues.

And, naturally, the damage amount is wildly unrelated to actual revenues - not quite the "one download on Napster == $250k" levels seen in copyright litigation against consumers, but still almost half of Spotify's likely revenue for 2017...