Many startups move up to the jam when there is little else that has optimized performance and efficiency like the jvm for 20-30 years.
Of courses this is a moot conversation if you’ve never used Java at scale. Apple and others are Java houses.
You can push Java very far.
Of course you can also write horribly ugly code in it.
But the secret of JVM existing as an option is eventually learned by most who scale.