Oracles owns a lot of things, including MySQL and Java
[1] Large corporations that will through money around to avoid trouble.
Apparently people keep forgetting that OpenJDK is mostly developed by the same company and developers that they love to hate.
Additionally, so many companies depend on Java (including Oracle!) that if they suddenly laid off the entire developer workforce I suspect they'd all be hoovered up by other companies and put right back on their old duties, just in different offices.
Also it seems a lot of the JVM engineers are based in Russia, where presumably their costs are not that high.
We all know how critical to the daily business those languages have become.