There are a lot of sophisticated problems dealing with enterprise software even in higher languages and even in situations where things like performance or resource usage is not a primary concern.

For example, how do you handle authorization, logging, and how do you make the code maintainable? That's a really tough problem that requires a lot of thought about the overall system design.

And of course it's always a lie to say that performance and resource usage aren't a concern -- they're not a concern until they are.