It stopped being a free market system a long time ago. Sherman Antitrust is a problem, not a solution,
I dissagree. It's a problem because it hasn't been applied. We lowered the import tariffs and allowed foreign competition in sensitive markets like banking. We allowed firms to merge into "to big to fail" in order to compete against foreign companies, that had no anti-monopoly laws.
We've allowed our press to be gobbled up by 6 main corporations. There used to be laws limiting how much of the market a single firm could have.
AT&T used to be protected as a national resource. But when they finally applied the law and forced a split up it opened a bonanza of innovation and new product offerings, prices fail and quality improved.