I think the article's author made two points -- one quite sensible and the other very much subject to the criticism you raise. I thought the useful point was,

I think the article's author made two points -- one quite sensible and the other very much subject to the criticism you raise. I thought the useful point was, "In recent decades antitrust law has shifted to consider only the impact on a narrow swath of society (the direct customers of the accused antitrust violator)." Aside from that though, I agree with your criticism of modern liberalism.