I'm not sure that there are as many problems to solve for languages like Rust and Go as there are for languages like PHP and JS, Ruby or Python. Basically deskt

I'm not sure that there are as many problems to solve for languages like Rust and Go as there are for languages like PHP and JS, Ruby or Python. Basically desktop/system vs web apps. Of course we can write web apps with Rust and Go and we do but why bother? There is evidence that the world is using PHP to write web apps, not the new (and better) languages of the last few years. It's so much easier. Java is somewhat in the middle: a compiled language heavily used for web apps. There was little else to use in the 90s, except Perl, so big Java shops got established, banks started using it and it will live at least as long as COBOL. But do I want to write web apps with Java? No thank you, I jumped ship to Ruby 15 years ago, then added Python and Node.