Innovation is widely considered one of the most important drivers for firm growth in the contemporary economy. However, the 'elusive' as well as heterogeneous nature of innovation has generated a lively debate among scholars with regards to the best metrics to capture its features and effects....

Since 1980, US corporate valuations have risen relative to assets and operating margins have grown. The possibility of sustained economic rents has raised concerns about economic dynamism and inequality. But rising profits could come from political rents or, instead, from returns to investments...