Apple's iPhone and App Store are far more of a walled garden. The whole Tile debacle the article opens with as well as the Spotify one and many other instances of them crippling competitors are ripe for antithrust too.

Similarly, I think what Amazon does with their Basic brand as well as them blocking Google products and other competitors off their stores could very well be a target. Them using financial tricks to pay some of the lowest taxes also won't help them with democrats.