An example from the article:
“In December 2019, the 9th Circuit held that the statute doesn’t protect a firm from antitrust liability if its decisions about “blocking and filtering” content “are driven by anticompetitive animus,” according to Barnett. He said in the future, he expects the Justice Department’s Antitrust Division to support rulings similar to the one made by the 9th Circuit, in light of Barr’s comments.”
These are issues with public companies.
The anti-trust laws apply equally to public and private companies.
Koch Industries isn't immune.