User blog comment:Spawny0908/UPDATE!!!!: The Free DLC pack is coming in...../@comment-82.10.9.80-20110822163642/@comment-3455248-20110822164848

Since it's not a MMORPG, that wouldn't work. There's not one consistent world - every Free Roam session is different and you couldn't lay claim to a piece of land in all of them (not enough buildings to go around).