I would argue it's not just a "strange oversight", a lot of the article falls apart with that knowledge. The article continues with: "This is because we have a

I would argue it's not just a "strange oversight", a lot of the article falls apart with that knowledge. The article continues with: "This is because we have a different label for when different corporations get together and determine the cost for their services. We call it price fixing. And price fixing, under the Sherman Antitrust Act, is illegal." However, such a practice is legal and is very well known. Musicians do it, and a lot of other skilled labor have similar things (I seem to recall IBEW is another such organization).