So you are on about now that there is a significant difference between an "online multiplayer" game and a "multiplayer online" game?
Just to clarify this point.
Battlefield 4 : Online Multiplayer
Elite: Dangerous : Massively Multiplayer Online
See the difference?
Battlefield has up to 64 people connected to 1 game.
Elite: Dangerous has thousands of people connected to 1 game (BGS).
So yes, you include Solo players in the balance equations. They are part of the MMO.
And to answer your other point, yes, even Ezekiel thinks my mind is gone