https://en.wikipedia.org/wiki/Diffusion_of_innovations
https://www.amazon.com/Diffusion-Innovations-5th-Everett-Rog...
This is the seminal book on marketing, social cognition, innovation, etc. It blew my mind. Mostly that we've known this stuff for so long, but apparently must keep rediscovering it.
Nonetheless, I think I'll buy this book and read it, just to see if there's any kernel of novel insight there. After all, for an innovator / entrepreneur, this is one of the most crucial issues out there.
[1]: https://www.amazon.com/Crossing-Chasm-Marketing-High-Tech-Ma...
[2]: https://www.amazon.com/Diffusion-Innovations-5th-Everett-Rog...