Capitalists, not socialists, pose the greatest threat to capitalism
The small start-up business owner loves the free market. The established business owner does not since it allows others more clever to undermine his success.
But this author gets this wrong. The combination of business mavens and politicians offering each other corrupt self-help to thwart competitors is not capitalism; it is socialism. It is government politicians offering established business owners an opportunity to close off competition by exchanging favors which usually requires the business owner kickback funds into the politician's re-election campaign. This is bribery although it is played in a way which makes it impervious to criminal prosecution.
This is socialism, not free markets, name it correctly.