That's a distinction without a difference; the consent agreements and cases arose as a result of antitrust regulations.
What has changed since then are the legal theories of when and how to apply antitrust regulations. The law as written has not changed, but the way it's enforced (or not) certainly has.
What has changed since then are the legal theories of when and how to apply antitrust regulations. The law as written has not changed, but the way it's enforced (or not) certainly has.