Linux already won in all markets where there is no direct user interaction - servers, embedded devices of all kinds, even stuff around you that you don't suspect. Game over.
Then it's also wining big as the core of a lot of user iterable stuff, even if the interface is something else - smart televisions, android, a lot of POS or dedicated information screens.
(If you extend Linux to unix and count Darwin, sum all iOS and apple stuff)
So what remains? Desktop end-user interfaces. This is a endless war because everyone has different needs. There will always be market for windows, OS X, heavy users on Linux and simple terminals for browsing and email. This last case is where Linux is eating market, because of the lower total costs, not because it's free, but because it's a system that can be configured to be simple to use, secure, hence requiring no big formation or constant maintenance.
Then it's also wining big as the core of a lot of user iterable stuff, even if the interface is something else - smart televisions, android, a lot of POS or dedicated information screens.
(If you extend Linux to unix and count Darwin, sum all iOS and apple stuff)
So what remains? Desktop end-user interfaces. This is a endless war because everyone has different needs. There will always be market for windows, OS X, heavy users on Linux and simple terminals for browsing and email. This last case is where Linux is eating market, because of the lower total costs, not because it's free, but because it's a system that can be configured to be simple to use, secure, hence requiring no big formation or constant maintenance.