Is Enterprise in Java limited to a narrow niche?

Question

Java

I noticed that when viewing vacancies in Java (JavaEE/Spring Backend), 90% of vacancies are either a fintech company or a telecom company, a few more GIS come across (but there already with a python).
Therefore, a completely logical question - enterpise in Java - are these three niches and that's it?
ps if we look at .net, then there is somehow more diverse in terms of companies and more of the "real sector".

Answer 1

It's any niche.
Games, aggregators, shops, medicine, etc.

Answer 2

It's just that these areas have the highest need for employees. They recruit in droves, and there are a lot of vacancies.

Answer 3

These are very narrow niches.
I work in a different technology stack in one of these niches.

if we look at .net, then

Usually the niche is still more primary than the language. Knowledge in a niche is more difficult to acquire.