I know how to defeat Linux.
Have Microsoft purchase the rights.
It’ll be toast in a couple of years.
But, if possible, that would be the way to do it.
The "rights" to Linux is distributed among hundreds, or even thousands of individual contributors.
Microsoft would have to buy out every one of them, or remove their contributions and rewrite them.
Sorry but you just demonstrated that you don’t understand what Linux is. This isn’t possible.
Also, if you include other operating systems that use the Linux kernel (Android), along with other products driven by Linux (routers, etc.), then Linux is by far the most pervasive OS on the planet.
Why would you *want* it to be “toast”?