Django and Rails solve a problem that you can argue is much more common: writing concise yet readable code without needing reams of boilerplate to handle common cases."
Yes! I work for a commercial mathematics company that does OR consulting. We deliver our tools to our customers via SaaS and the user base is basically nothing in comparison to what I have scaled for in the past. The biggest problem we have is writing maintainable code at speed, performance is only a concern on a UX side and is easy to manage.
[although I will add this - I did comment on one of the Ruby articles that sparked this debate that I feel that language communities are repeatedly solving similar problems in isolation]
"Not everyone is solving a scaling problem.
Django and Rails solve a problem that you can argue is much more common: writing concise yet readable code without needing reams of boilerplate to handle common cases."