Most of these features have been tried, and abandoned, by Google itself. It's possible Google stopped doing them because they hurt its ad business, but it's als

Most of these features have been tried, and abandoned, by Google itself. It's possible Google stopped doing them because they hurt its ad business, but it's also possible (and likely) they confused users or were difficult to maintain and not actually used. (What's a "non-commercial website"? And what happens when it suddenly becomes commercial? And when there are millions of them? etc.) I predict that in 10 years Google Search will still be dominant, and we'll still be complaining about it.