"The reader may benefit from my explanation of the key turning points in my own thinking, during the six years of research. Ever since my graduate studies at Yale, the quest for a better understanding of the process of economic growth has been an important part of my research. Much of the work...

This paper relates to current concerns about the high concentration of digital platform markets and the effects of large companies such as Amazon, Facebook, Google, and Microsoft, on innovation. Several stakeholders and analysts assert that digital platforms have become so dominant that they...