I think part of the reason people play The Elder Scrolls and other Bethesda RPGs is because they want a strong single-player experience. Not every experience can be enhanced by the addition of other people. The fact there there are still powerful single-player games available is really refreshing to me. Multiplayer is fun but it will never be as big in my gaming life as single player is.
As for the possibility of Skyrim having been multiplayer? Of course it was possible. Maybe a bit impractical but all games have the potential to include multiplayer. Hell, you could pass off the controller every 15 minutes on the couch with a friend and count that as multiplayer. Grand Theft Auto 4 proved that big sandboxes can handle an extra player or more. I understand that GTA4 didn't have separate areas like Bethesda RPGs do but that's really something of a non-issue since each player in a multiplayer game would (or should) rely on their own console's processing power to generate whatever area they're in at the same time other players are in other areas.
As for the possibility of Skyrim having been multiplayer? Of course it was possible. Maybe a bit impractical but all games have the potential to include multiplayer. Hell, you could pass off the controller every 15 minutes on the couch with a friend and count that as multiplayer. Grand Theft Auto 4 proved that big sandboxes can handle an extra player or more. I understand that GTA4 didn't have separate areas like Bethesda RPGs do but that's really something of a non-issue since each player in a multiplayer game would (or should) rely on their own console's processing power to generate whatever area they're in at the same time other players are in other areas.