Native languages for web development

Why are "native" languages* almost never used for web development? Shouldn't FastCGI be just as good as what web servers do with Perl or PHP? What am I missing?

* languages designed for AOT compilation to opcodes like C++, Ada, C, D, Pascal, or Go

Because the CPU is not the bottleneck for the vast majority of web apps, and writing in those languages is more error-prone and much slower.