Although Linux is superior to Microsoft Windows, Mac OS already uses a Unix-like OS under the hood, much like Linux.
It is unlikely that Linux will “take over” Windows and Mac OS, but Linux is already taking over the IoT with your smart phone, modem, router, intelligent automobile, the servers that serve us the Internet and the company that serves you television, mostly all run Linux right now.
I’ve been exclusively using Linux as my desktop OS for 17 years now and would never go back to MS Windows which is prone to virus attacks because people have to download software from unsafe places – something that does not happen in Linux.
In Linux you get softare from the Linux repositories, which is safe and secure. You don’t go to a website created and hosted by who knows who and download software for your computer.