> 1. Users enjoy product for free. You got this part wrong. Users contribute to the project and/or draw contributers to the project. This happens to proprietar

> 1. Users enjoy product for free. You got this part wrong. Users contribute to the project and/or draw contributers to the project. This happens to proprietary projects like twitter as well, where key features were invented by users. https://qz.com/135149/the-first-ever-hashtag-reply-and-retweet-as-twitter-users-invented-them/ https://qz.com/135149/the-first-ever-hashtag-reply-and-retwe...