1. Node on the server does not have a comprehensive framework that compares to rails. You'll roll your own, and it will suck.
2. It's not any more difficult to scale than Node, you'll just need more servers to handle the load. Horizontal scaling works basically the same for both platforms.
3. Well understood baggage is better than baggage only a handful of people in your company know about as a result of your custom web framework.
4/5 of course nothing is a perfect fit for every project and everyone has their preferences, but this can be said for any language or platform so it's sort of a non argument.
6. Good luck finding interns and junior devs who can be productive writing in some esoteric functional language.
2. It's not any more difficult to scale than Node, you'll just need more servers to handle the load. Horizontal scaling works basically the same for both platforms.
3. Well understood baggage is better than baggage only a handful of people in your company know about as a result of your custom web framework.
4/5 of course nothing is a perfect fit for every project and everyone has their preferences, but this can be said for any language or platform so it's sort of a non argument.
6. Good luck finding interns and junior devs who can be productive writing in some esoteric functional language.