Utter nonsense. Reread what you just wrote. You somehow seem to really want us to believe, say, that because lemon growers choose California as a startup site and that California doesn't have single payer and Canada does, healthcare policy doesn't matter to startups.
We can do better than that. Here are some entrepreneurs explaining what they love about single payer:
http://biznik.com/articles/the-canadian-healthcare-experienc...
http://www.shindigital.com/blogpost/18
Here's an MIT economist explaining how "job lock" resulting from the need to maintain health insurance cripples the American economy and entrepreneurship:
"The type of universal health insurance coverage policy proposed by President Obama will clearly promote the freedom of workers to leave their jobs to start new companies. By solving a major impediment to mobility in the U.S. labor market, a larger government goes hand in hand with more business development. The next John Galt may owe a debt of gratitude to this pioneering effort in universal coverage."
http://www.washingtonmonthly.com/features/2009/0905.gruber.h...
Here's INC magazine touting Obamacare (not single payer, but infinitely better than what "the market" has given us) as good for entrepreneurs:
http://www.inc.com/kimberly-weisul/affordable-care-act-and-e...