What happened to antitrust is you guys had an antitrust system that was going way too far (think breaking up regional gas stations too far) and then nixon appointed Rehnquist to the supreme court in 1972, then Reagan appointed him chief justice in 1986. Rehnquist made decent arguments for reforming that that were then taken too far over his tenure (and continuing to this day) and now we have multinational oligopolies. Taking a good idea too far, making it an extremely bad idea is basically the theme of the pendulum swings of human history.