Earlier quoted context omitted.
Any retail store. Like Costco and Walmart. They can break an entire company by just buying from a competitor.
There is a business relationship between Walmart/Costco and the product or a competitor of the product. In the Google News case, there is no business relation with any news site (Alphabet ads might have a relation with the news site, but that is not Google News).
Walmart is free to ban Google from the premises (robots.txt) or to negotiate an exchange (monetization agreement).