There sure were a lot of google and facebook products on that list. I wonder what the success rate of google/facebook in-house created products is vs the marke

There sure were a lot of google and facebook products on that list. I wonder what the success rate of google/facebook in-house created products is vs the market as a whole. Also, another interesting question: what is the start up success rate in recent years vs years of past? My intuition based on all the stuff I've been reading over the last 10 years tells me that the success rate of start ups is decreasing, especially for software only startups (ones that are just innovating "bits rather than atoms" - avc.com quote.): it just seems overly saturated, or perhaps most of everything that can be done with the current opportunities has been done.