[patrickmay]

Your point about inability to integrate large systems is the exact opposite of my experience. I find that Vim and Emacs users are the most proficient in using tools to build and integrate large systems. Most, again in my experience, know multiple languages, including shell scripting. They also are very comfortable with command line tools. This has significant benefits when turning a system over to the operations team.

By way of comparison, the IDE users (with some exceptions) are stuck when needing to accomplish anything not directly supported by the IDE.