How many SV companies don't file for defensive patents? It's only been in the past year or two that a few bold companies have taken vows to not file software p

How many SV companies don't file for defensive patents? It's only been in the past year or two that a few bold companies have taken vows to not file software patents, regardless of the consequences (I stand I admire). I can tell you that if you have a type of technology that is patent eligible, and you refuse to file for patents, finding investors is difficult. And indeed, among those companies that have sworn off patents, the ones that I've noticed have all been bootstrapped.