To me the problem isn't that Google de-prioritized these sites, it's that they did so while running their own shopping service. It's the same problem I have with Apple's work to ban game streaming services from their site- it would be a lot more convincing that they are acting in the users best interest of they weren't also selling Apple arcade. We really should be concerned about gatekeepers prioritizing their own services over the competition. I'm not saying that these sites should be restored to a place of prominence (they shouldn't) but that the underlying idea that a monopoly like Google search should be restricted in its ability to branch out or self promote its services is valid.