ESPN royalties are ~$7 per subscriber; $7 of your monthly cable bill goes to Disney just for ESPN [2]. They are obviously collecting that from many people who are uninterested in sports, as most basic cable packages include ESPN (if not ESPN 2 and so forth).
Cord cutting is the single biggest threat to Disney right now, and I'm sure this, a major signal that people are excited to consume their sports via the web and that ESPN is inching closer and closer to death, has them crapping their pants.
When Amazon buys Disney World, will they replace Cinderella Castle with a giant cardboard box bearing the "Amazon Prime" tape? ;)
[1 (PDF)] https://ditm-twdc-us.storage.googleapis.com/q1-fy17-earnings...
[2] http://awfulannouncing.com/2016/espns-rising-cable-fee-is-no...