The question in Schumpeter's economics is always, Is there sufficient profit? Is there adequate capital formation to provide for the costs of the future, the costs of staying in business, the costs of "creative destruction"?
This alone makes Schumpeter's economic model the only one that can serve as the starting point for the economic policies we need. Clearly the Keynesian - or classicist - treatment of innovation as being "outside," and in fact peripheral to, the economy and with minimum impact on it, can no longer be maintained (if it ever could have been). The basic question of economic theory and economic policy, especially in highly developed countries, is clearly: How can capital formation and productivity be maintained so that rapid technological change as well as employment can be sustained? What is the minimum profit needed to defray the costs of the future? What is the minimum profit needed, above all, to maintain jobs and to create new ones?"