But uh yeah... what percentage of Java developers are still on Java EE 7, 8?
The "business advantage" is in things not changing. If you compare languages by business advantage then Java 1 wins because "we haven't had to waste money upgrading since the 90s!"
I'm going for something a little more meaningful, developer ergonomics, which you hand-wave away as not being valuable to a business (protip: if your developers get to care about their code that's a good thing, you'll find you can get better developers if you look for the ones who do)