We support nginx in our products, due to high demand for it, but we don't really like the way it has historically handled modules. Having to custom-build to do interesting things is very far away from the "plug and play" experience that our users expect and can get with Apache.

While I'm not on the bandwagon that says all Apache installations would be better on nginx (and I still run Apache on all of our servers, except nginx test machines), I do think this makes the case quite a bit more compelling, particularly for people who package and distribute the web server (OS vendors, control panel maintainers like me, container builders, etc.).