A decade ago many of us thought that open source applications like LibreOffice and Thunderbird would dominate. Instead, open source seems to be winning everywhere in infrastructure and libraries, as companies don't want to lock into proprietary middleware anymore like Weblogic or VMware. But many (most?) applications are now web-based and closed source (e.g., Google Docs, Salesforce, Gmail, etc.).

One critique: GitHub stars are not the best indication of interest and can be gamed. Instead, I prefer using commits, issues and unique authors as a better metric of project velocity: https://www.cncf.io/blog/2017/06/05/30-highest-velocity-open...