I think the key thing for me is - Java has been an open platform for decades and has huge amounts of library support. I don't think even python can actually match Java for just the sheer pervasiveness of libraries, and many of them are pure java too, whereas many python libraries are C modules.

C# still lives under the specter of Microsoft. EEE is recent in many of our memories. And the last time I looked at C# (considered using it with Godot), compiling still required some silly setup stuff and the tooling was also subpar compared to Java (though all languages are subpar at tooling vs java. IntelliJ alone is a reason to use Java imo.)