Sure, a national endeavor for growth can include tax policies, broadband programs, educational reform, capital investments, flexible monetary policies, etc.
BUT, I think one of the most important and worthwhile goal should be the decentralization of high-growth job centers.
Setting up shop in Silicon Valley these days is ridiculously expensive. Besides, basing a large percentage of your high-growth businesses in an area that may be ravaged by a natural disaster at a moment's notice is clearly unwise.
Furthermore, the success of the nation should not be tied to the fate of Silicon Valley, or the fate of 3-5 major job centers. Hence, a national priority should be to decentralize this economic activity across the country.
There is no catch-22 here, contrary to what people say. ("We set up shop here because all the qualified workforce is here.")
With real estates, school expenses, public transportation capacity and urbanization reaching unsustainable levels, there is no doubt start-ups would benefit from setting up shop in less expensive areas, where their employees could live without mortgaging themselves to retirement or sacrificing the well-being of their family members.