Discussing local produce and national products is important because it helps put things into perspective. Locally produced content or goods improves the country's GDP, which translates to an improved economy and service generally. National product is also important because it adds the GDP and income earned by the country's residents from overseas investments; this helps us know how the Diaspora is doing.
everything starts locally only, nobody at once starts producing on a national scale at once, unless, it is a product of a nationally acclaimed company. If the product hits the market like a meteorite and profits start rolling in then the company may start producing goods on a national level