Java - just like JavaScript has a lot of inertia which won't be going away anytime soon.

Anecdata: my seven person college social circle consists of one front-end dev(me), one systems dev working in C++ and Go, one all-around programming handyman, one sort of dev-ops and three backend devs who work exclusively in Java.

Large non-IT companies and their respective IT departments are first and foremost interested in technologies that work and can be easily staffed. Java fits the bill for now.