In a nutshell:
Innovations that continue to advance at a breakneck pace while enhancing other innovations, with disruptive economic and lifestyle effects.
Technologies whose current price-performance makes it feasible to incorporate them into today’s business and social problems in new and previously impossible ways.
Example: Digital Photography
Since 2000 the emergence of digital cameras, which then converged with camera-equipped cell phones, has driven skyrocketing growth:
2000: ~ 86 billion photos were taken.
2012: ~380 billion photos were taken.
2022: ~1.72 trillion photos were expected to be taken.