No, because battlefield 1942 claimed to multiplayer since the beginning, and it is an entirely multiplayer based game as well. There is no campaign mode and the single player is a minor part of the game.
Mount&Blade claimed to be single-player from the the start, and it is entirely focused on single player. It has always said that it would not be mutliplayer right from the start. Making multiplayer now is a separate deal, and a bonus. You are not owed it, and it is the fruit of a lot of extra work of which they should profit from.