If the acquisition goes well, it could keep Disney ahead of Netflix's scale for another three or four years (on an apples to apples basis). The Fox assets they're acquiring are substantial, however there's zero organic growth in the Fox business (it's closer to a contracting business with 2017 sales below 2015 sales).

An acquisition like that might be as likely to throw Disney into chaos as anything and give Netflix a leg up on stealing market share, given the corporate history of very large acquisitions.

That also of course depends on what the Netflix growth profile looks like over time as well.

For example, does Netflix routinely still generate 15%-20% annual growth after they're up over $20 billion in sales? If so, there's nothing Disney can do to stay with them short of continuing to buy up the rest of the entertainment universe.

The global subscriber momentum Netflix has now is incredible. By the time Disney figures out exactly how all of their streaming pieces are going to fit together, Netflix might be up to 250 million global subscribers.

Is there a sizable precedent for companies hitting $20 billion in sales and continuing to routinely generate 15-20% growth?