User blog comment:Emptylord/Blogs/What if wards were contestable objectives instead of items?/@comment-13643964-20130728012551/@comment-3974211-20130728014827

It would also mean that your support chooses your ward placement for the rest of the game, and at least two of them will be bot game where they are completely unwanted late game.

No, if wards are going to be persistent, they should be chosen by Riot from a map-design perspective.