As someone who has built GUI wrappers for perfectly working tools, it’s because support is a nightmare. There’s a subset of your users who aren’t going to inve

As someone who has built GUI wrappers for perfectly working tools, it’s because support is a nightmare. There’s a subset of your users who aren’t going to invest in learning your existing tools but you still want them to use your product. You can’t write more documentation because the more documentation there is, the less people will read it. You can’t tell them to ask for support because they’ll just flood you and eventually give up. So you build a GUI for these users and they’re happy and you’re happy. Your expert users won’t understand, will complain that you’re wasting your time, but that’s a price worth paying.