But 37s never opened any of their end products (basecamp, campfire etc), they open sourced the framework and for a framework BSD or LGPL makes more sense becaus

But 37s never opened any of their end products (basecamp, campfire etc), they open sourced the framework and for a framework BSD or LGPL makes more sense because nobody makes money directly from a framework or a library, they make money from the software built on top of it, this is why they are more likely to contribute their changes back. If you open source an end user product on the other hand, people are less likely to contribute back so AGPL is needed.