Since Linux is founded in 1991, Linux is transformed into a mature operating system, ready to use operating system even for people that never touch a computer before. Linux at the beginning only had Command Line Interface (CLI). Over time, Linux begins to have Graphical User Interface (GUI).
However, Linux came after Microsoft Windows. Many people are more familiar with Microsoft Windows than Linux. One of the reasons why people are reluctant to switch to Linux is because of its user interface. On the enterprise level – at least in the place that I work – it is not easy to push employee to change from Microsoft Windows into Linux. Changing from Microsoft Windows to Linux, means that they must learn about how to use Linux.
To reduce high learning curve, now we have Zorin OS.