6. Canada (tie)
Barrier to entrepreneurship index: 1.14
In Canada, there is much hand-wringing over corporate tax rates, which -- if you believe some pundits -- scare off business here before it can begin. Still, outside of perhaps our neighbours to the south, you'd be hard-pressed to compile a list of more prominent companies born to a nation than in Canada, which is home to leaders in every sector of business. Major consumer brands like Tim Hortons and BlackBerry, of course, came from Canada, but so too do lesser-known powerhouses like Barrick Gold, the world's largest miner of gold, and Flickr, the web's most prominent photo sharing site.