if i was google's lawyers i'd argue search isn't an industry. they make money via ads so its in the ad industry. itsmy chief problem with thiels 0 to 1.
Software is the industry. Search is the subcategory. Ads are a part of the business implementation of the search product. You can't say every product is automatically in the ad industry because it generates revenue with ads. If you used this logic here, what of all the other products in different industries that generate their revenue with ads?
TLDR;: But in one sense, the advertising business is about as static and boring as they come. The industry has never grown in scale. Looking at data since the 1920s, the U.S. advertising industry has always been about 1 percent of U.S. GDP. It’s surprisingly consistent, mostly tracking between 1 percent and 1.4 percent—and averaging 1.29 percent.
So when you said, "...eating from the same pie", according to the linked article, they actually are.
tangentially related: thats why i love amazon's upside. retail means theyre swimming in way bigger pond than facebook/google (at least with their core products)