You can write a GUI for anything, so if you are willing to spend enough time searching for software, you can solve anything with GUIs. But the big difference is

You can write a GUI for anything, so if you are willing to spend enough time searching for software, you can solve anything with GUIs. But the big difference is with CLI, there is no need for third party software, the functionality is right there. Here is a simple task which can easily occur in business: you have a folder with thousands of files named somewhat haphazardly. Copy all the files with have numbers 2011 to 2019 anywhere in the filename to an usb stick.