America's peak years of indigenous innovation ran from the 1820s to the 1960s. There were a few financial panics and two depressions, to be sure. But in this period, a frenzy of creative activity, economic competition and rapid growth in national income provided widening economic inclusion, rising wages for all, and engaging careers for most.
The level of dynamism is a matter of how fertile the country is in coming up with innovative ideas having prospects of profitability, how adept it is at identifying and nourishing the ideas with the best prospects, and how prepared it is in evaluating and trying out the new products and methods that are launched onto the market.