Amazon last year recorded profit of more than $30 billion on revenue of $575 billion, powered by its online retail operation and its AWS cloud computing division. "They have this whole flywheel model ...

Amazon: The e-commerce giant is a prime example ... they empower users to submit and vote on new product concepts. This flywheel approach has led to a resurgence in popularity and innovation.

"They have this whole flywheel model with Amazon Prime membership in the middle," said eMarketer analyst Suzy Davidkhanian. "That's the glue that keeps everything together." Businesses include ...