I agree with the points in this essay, but I have paid attention to 37signals for quite awhile and I don't think this is actually why. I think the reason they p

I agree with the points in this essay, but I have paid attention to 37signals for quite awhile and I don't think this is actually why. I think the reason they priced as they did was because their first clients were agencies similar to themselves and they were selling to the whole agency. The second reason is because Jason Fried likes simple business propositions, and likes to picks prices based on how they look/sound/feel. This isn't a criticism; it's perfectly valid to commit harder to a pricing strategy as you realize other benefits. I just don't think that they started out this way and I think a new software company could make a case for per-seat as a way to sell to companies too small to pay $99/mo all-inclusive without giving too much away to slightly less small companies.