Antitrust laws are incredibly vague. Here's the relevant part of the Sherman Act as an example.

>Every person who shall monopolize, or attempt to monopolize, or combine or conspire with any other person or persons, to monopolize any part of the trade or commerce among the several States, or with foreign nations, shall be deemed guilty of a felony,

You can’t begin to understand anti-trust law in US without looking at the extensive body of case law too - like any common law system, just reading the statute doesn’t tell you the whole story.

The same is true for environmental law.