Most of them still require a very specific, very special, very fragile environment to run, and require multiple tools and carefully ran steps just so it does same you can do with a compiled executable linked to the OS.
They weren't made for having libraries, or being packaged to run in multiple machines, or being distributed to customers to run in their own computers. Perhaps JS was the exception but only to the last part.
Sure it mostly works today, but a lot of people put a lot of the effort so we can keep shoving square pegs into round roles.
