Speaking based on direct experience, I doubt that is happening in Financial industry. I wrote a utility in Go that is heavily used in our build workflow. I coul

Speaking based on direct experience, I doubt that is happening in Financial industry. I wrote a utility in Go that is heavily used in our build workflow. I could have written it in Python too but my objective was to have a dependency-free fast binary in a statically typed language with a decent standard library and Go checked all the boxes. The language is decent and I don't have any huge complaints. Would I now choose Go to replace our core applications that are written in Java? Nope. Why? My personal main reason is that in pursuit of keeping things simple and homogenous, even everyday things take too much code. I can get the same functionality in Java in basically half loc while keeping the code totally boring and devoid of any interface-madness-programmer-creativity-expressivity black-holes. When you want to type less and deliver quickly, that is important. Would I use Java to write a utility with objectives similar to what I mentioned in my first paragraph? Nope. Go is totally fine for it.