system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is Disney allowed to merge with all of these other big companies, most recently 21st Century, and not suffer from monopoly laws?

Just off the top of my head, they own Marvel, Lucasfilm, 21 Century, ESPN, ABC. How is this not considered monopolization in the eyes of the law?
gpt
Monopolization is, generally speaking, when you control all (or a substantial portion) of a _market_ or _industry_.  Standard Oil was a monopoly because they controlled almost all of the oil industry; Microsoft was thought to be a monopoly because they controled 90% of the PC OS market.

Disney, even as big as they may be, controls only a tiny fraction of the entertainment industry.  There are many, many other companies producing entertainment, so they are not where near the level of market share you'd need to think of them as a monopoly.