In many respects, Yahoo is more of a publisher, a content provider, than a tech company. That makes it more like the newspaper business that he knows well.
Unlike most technology companies, IBM has been around since before Warren was born. But in general he doesn't buy into technology companies, he is well quoted in that regard.
I know they have a quantum computer, Watson AI, and that Power architecture...but isn't IBM primarily a sales and consulting company? at least, by revenue and headcount?
Anything that publishes content for public consumption to get advertising revenue is a media company. Google publishes search results to get ads. Facebook published your information for ads. Twitter publishes your tweets for ads.
I heard on the radio that someone proclaimed Facebook is now a media company...no, they've always been a media company.