You're missing the bit where you run Tomcat on a VPS. Deploying RoR isn't much more complicated, but still infinitely more complicated than dropping it on Herok

You're missing the bit where you run Tomcat on a VPS. Deploying RoR isn't much more complicated, but still infinitely more complicated than dropping it on Heroku and having it just work. Plus scaling: breaking a sweat on Heroku? Push a button. On your VPS? All kinds of trouble, just when you probably have other things on your mind.