In the broadest sense, a First-Person Perspective should focus on what I am doing. A Second Person Perspective should focus on what You are doing. A Third Person Perspective should focus on what Martha and Tom are doing.
The most pervasive perspective that the reader having complete control over the story should be the Third Person perspective. You the reader chooses what Martha, or Tom, or whoever does next or what happens to them or the actions of other characters in the story.
With the First Person perspective, I suppose it makes sense as well. You as the reader is choosing what happens to Me and the chapter should revolve around me reacting to those choices.
However, outside of Mind Control stories...I don't see any reason why the Second Person Perspective should ever have you(the reader) in control of other peoples' actions and personalities within the confines of the story. Second Person stories should revolve around you reacting to the events and situation that you're put in.
In short, I agree. Perhaps I would be more into Mind Control stories if it didn't seem like to a certain extent most stories involve the reader controlling the actions of every character.
The second I post this, you (& everyone else) will be able to see that I "Liked" your post. In all honesty, was hesitant to say/choose that, as it was not so much that I liked it (the way people like a movie or band), but I appreciated it, as it remains me of a school I attended that had daily classes specifically called "Reading" that I don't think ever mentioned "Second Person". (May be why it's still there, but empty.)
Not to totally negate nor argue with myself, but reading your post ALSO made me wonder if all stories on the site aren't in the same person which a comparatively-smaller part is thinking might be yet another "Person", in that the reader & writer (in thought & maybe later on screen) is/are deciding the thoughts & actions of all individuals.