Incentives such as startup funding, Intellectual Property protection, tax exemptions, ease of starting a startup, costs to run a startup, insolvency regulations etc.
USA has by far the best environment for startups and businesses.<p>There are countries that provide small goodies and favorable conditions in the early stages to lure businesses, but the foundations of those economies are usually not as good and the perks often come with significant problems elsewhere in the economy and society.<p>There is a reason that successful businesses typically come out of USA.