It's pretty funny for you to say they are in possession of the field
Ah, I should have gone ahead and written "the field of battle", which is what I meant. Which, in this case, was their own small piece of turf, not the entire world of online chat. Obviously they don't dominate the world. Nor do they seem to want to. They seem perfectly content to own their particular chat niche, and they probably would be happy even if that niche were little more than "users of other 37signals products talking to each other".
Ah, I should have gone ahead and written "the field of battle", which is what I meant. Which, in this case, was their own small piece of turf, not the entire world of online chat. Obviously they don't dominate the world. Nor do they seem to want to. They seem perfectly content to own their particular chat niche, and they probably would be happy even if that niche were little more than "users of other 37signals products talking to each other".