Emerikol
Adventurer
I think another limitation on games involving larger groups of 4 or 5 players and a GM is that the genre doesn't always fit. I mean you could play a military team I suppose but often a lot of the storyline would be PCs acting independent of each other. Going around as a group is less explainable. Whereas with space and fantasy groups fit pretty easily into the concept.I'm always hoping NOW will get more popular. Current day modern genre RPGs are always a mere fraction of the overall RPG market.
What I think is the miss is that we need some games for fewer players. We don't always have a large group so a GM with 2 players could really think about modern stuff because then it fits and can be richer.