I do agree that the Facebook news is bigger than both Apple and Spotify combined. And InfoWars seems to agree as well, as they've published a video complaining

I do agree that the Facebook news is bigger than both Apple and Spotify combined. And InfoWars seems to agree as well, as they've published a video complaining about Facebook's decisions almost immediately. However, I don't think that's the biggest damage they could face from a single provider. I'd say that YouTube could absolutely break the entire thing down to pieces. There are dozens of YouTube videos on their channel with millions of views, often multiple hours long. Hosting multiple hour long video files in a way that millions of people can stream them reliably, that's going to take some effort (and a non-negligible amount of resources). Since YouTube offers them both discoverability and unlimited video bandwidth, if YouTube made a similar decision to Facebook, they would most probably be destroyed in an instant.