The vast majority of businesses/projects are small, and will only have one or a small number of developers working on it. So Ruby on Rails (or PHP or Wordpress) is a suitable choice for maybe 80% of projects.
At the same time, a very small number of businesses require 100,000+ (or even just 1000+) developers. These businesses, because they have so many developers, employ the vast majority of professional developers. Thus, maybe only 20% of professional developers work on products that are typical of business needs.
This disparity explains why communities on Hacker News are typically so negative towards Ruby on Rails. It also explains part of what makes Ruby on Rails so remarkable. Even after all these years, it has a thriving community and has resisted the pull to become more "enterprisy." It's still a tool that is targeted at and well suited for a large swath of business cases, the vast majority of which will likely never need to migrate to something "better".
