It certainly would be interesting to go through crunchbase and do some exit analysis for each of the companies. I would hypothesise that there would be a really

It certainly would be interesting to go through crunchbase and do some exit analysis for each of the companies. I would hypothesise that there would be a really high failure rate of companies who do not charge. Conversely a "huge exit" rate for companies who charge would be insignificant. It will be interesting to get your take given your position with a stable paid business vs stackoverflow - which do you see as the best long term?