I really don't get this coming up with a new OS's thing every now and then.

As I see it, is all about driver support; just because is the bigger effort. That is why vendors (and the community) focus in only one or two options (Windows/Linux).

Anybody can come up with new fancy OSs, as a matter of fact many people does. Problem is, there is no incentive for vendors to produce specific drivers for those, and the communities are just to small to cope with the huge amount of hardware support to make them useful.

I just don't see the point of coming up with new OSs as long as Windows/Linux just work as intended.