YouTube has editorial control over which videos are allowed to stay up, which videos are eligible to get monetized, and which videos are actively promoted. It's not just a web server with an index and a movie player.
That may be so. The other point is that all those media mergers are perhaps the inevitable consequence of a battled and dying industry due to disruptive technology (YouTube / Widevine).
YouTube has editorial control over which videos are allowed to stay up, which videos are eligible to get monetized, and which videos are actively promoted. It's not just a web server with an index and a movie player.