Why can't this be served by established third-party libraries? Java did not have a good ORM, or a good dependency injection framework in the standard library for ages; everybody just used Spring.
Go has also long based their packaging around the idea that locations of source code and the identity of a package are strongly bound. This meant that random github-hosted libraries were easy to pull in, but it also meant that people did pull in all sorts of random github-hosted libraries. In Java programming, it's more common to use a modest number of high-quality libraries and frameworks (which may, in fairness, have a lot of transitive dependencies), but not as common as it is in Go or Node to use a large number of direct dependencies sourced from all over the web.
Enterprise does not care if there is A solution.
Enterprise cares if there is a SUPPORTED solution.
But lack of specs slows adoption, generally speaking.