I have no idea how anti-trust laws in the united states are supposed to work. Like why is Disney allowed to buy every studio? Why is Amazon allowed to buy like anything? Facebook also being allowed to buy Instagram and WhatsApp is crazy.
As long as Disney doesn't 'harm' consumers they are allowed to consolidate. Harm is poorly defined in this case.
I am firm believer in the EU model of anti-trust and this wouldn't have even be possible if they both agreed.
In the movie case, nobody else can distribute the old movie. In the patent or business case youve prevented future business, competition, invention. Owning an old movie doesnt prevent somebody from making a new movie about something different.
Where do you draw the line on how many stories a company can own before they have "enough and cant buy or make more." If Disney can make new movies, how is it any different to buy an existing one?