This 2011 report purports to summarize research based on 650 startups and has some interesting findings. https://dl.dropboxusercontent.com/u/1604665/Startup%20Genome%20Report.pdf A good summary of the report findings was provided by Bruce Cleveland at The Traction Gap Institute: http://tractiongap.com/what-it-takes-to-make-a-successful-software-startup-today Founders that learn are more...