A Funded Startup: An Alienated Brother?

I have seen this cycle happen over and over again. There would be a set of guys who’d be around in most barcamps and social circles and someday they’d decide to start a company, and eventually build a product that’d gain quite a bit of traction from the “first adopters” that you find in barcamps, MoMos etc and then the worst thing happens - they get funded. I have stats that show that more than 80% of companies whose growth and traction flatten out after getting funded by a VC firm. I’m asking