Maven's pretty big still.

https://github.com/search?l=Maven+POM&q=pom.xml&type=Code&ut...

https://github.com/search?l=Gradle&q=build.gradle&type=Code&...

And that's public github, which is supposed to be more cutting edge than the legacy code that powers most companies. I started a project with gradle on my last team and everyone complained because they had never used it before.

Yeah, I would love me some maven...

just got rid of a project using a 10 year old custom patched ant.