http://arstechnica.com/business/2012/06/estonian-mafia-looking-for-the-next-generation-of-entrepreneurs/

“There are probably 50 to 70 startups which have emerged within the last two or three years,” Martinson added. “Around five to ten of them have grown to over $1 million in revenue, some even reaching $10 million. So most likely we will see one or two companies reaching $100 million size in about three to four years time, which is substantial. And if we reach $1 billion, we’ll be extremely lucky.”

What is it abou Estonia that has such a hot tech scene? Is one company (Skype) with a large exit, what you need?

Yes, it's the power of a good story.

Once people see it's possible to build something huge, others want to try.

It emboldens people who might have otherwise not had the courage to begin.