You are missing the parts where:<p><pre><code>  1. Ruby was only backend&#x2F;apis, front-end app was PHP going over to Javascript,
     so Rails would have had a limited benefit
  2. He specifically said he needed to do a lot of concurrency which can get
     awkward to do in Ruby, and is natural in Clojure
</code></pre>
IMO this is a use case example where Clojure beats Ruby, even in some rewrites.