The Sources of Innovation by von Hippel [1] tries to answer this question of when innovation comes from users vs. manufacturers vs. suppliers. The book is nea

The Sources of Innovation by von Hippel [1] tries to answer this question of when innovation comes from users vs. manufacturers vs. suppliers. The book is nearly unreadable, but the topic is interesting. [1] http://web.mit.edu/evhippel/www-old/books/sources/SofI.pdf http://web.mit.edu/evhippel/www-old/books/sources/SofI.pdf