By this point everyone knows about Obama's blunder regarding telling entrepreneurs that they aren't really responsible (or merely partially responsible) for their businesses. Now, I get what the president meant, so please do not try to correct me on that. His point was that businesses are reliant on public services in order to build their business, and are, to some degree, dependant on the government.
However, even with the necessary qualifications, I still am in stark disagreement with the president's point. Not only do businesses and the wealthy already pay more in taxes than other groups in this country (something that Obama consistently ignores in his rhetoric), and not only to non-entrepreneurs have access to the same public services (of the same class of course), but I don't believe that there would be no success for entrepreneurs either without infrastructure.
It is not as if there were no businesses or leadership before the invention of infrastructure. It was of a much different form, but so was success. Infrastructure makes communities larger, and thus adds layers of success, but there was still success. Individuals in nomadic societies still could succeed, and create new positions and ways of doing things. So while the entrepreneurial spirit may use infrastructure, and while infrastructure can encourage it, it does not require the infrastructure.
At least, that's my opinion