BRP has a small, but rabid, fanbase that is slowly growing.
With the Gold Brick, the new RuneQuest, Newt's OpenQuest-crusade, some quite stunningly neat historical supplements from Alephtar, and Cthulhu on it's third decade I'm pretty sure it won't die anytime soon. The Laundry is on it's way, and there is a comforting level of BRP-related buzz on the boards I visit.
All is not bleak:)
The now-available monographs were long overdue, but the monographs won't sell this game. Catchy books on the shelf does that(and even in print, most of the monographs are not catchy). CoFE might very well be the one, but with Chaosium's past release schedules, the plan of releasing it in several volumes worries me slightly.