Earlier quoted context omitted.
> If you don't like the terms, leave. Apple captured 50% of the American economy. You have no choice. This is why the DOJ must act to bring an end to these anticompetitive behaviors.
50% is not 100%, which matters if you're accusing a company of monopolistic practices. (and why the Epic lawsuit is fighting that gray area)
In the US, this is further narrowed to include "harm to the consumer". For example: increased prices or deception. Under this guideline, Apple's on shaky ground.