And the education of your worker's is paid by the government, so you don't get employees that are desperate to pay their student loans.
And so is healthcare, so you don't have to pay no insurance (you may, but your workers don't depend on it).
Also, new companies can easily get public funding. Or loans with no interests that are covered by the government. Do companies in different countries get that? Can you get millions in loans at 0 interest that if you can't pay the government will in US?
New companies get a very friendly, near 0 taxation for few years, and the more people you employ (especially if young) the more slack on taxes you get. Do companies in countries with lower taxes get that?
Mind you, I still believe doing business in Italy is too expensive and beurocracy too high, but there's also very serious benefits of doing it that you don't get in silicon valley where the first wrong swing kills your business and company.