OpenSolaris, Linux (as a Unixoid), BSD are clearly gaining tremendous momentum.

Unix-driven environments will surely drive out Windows, since Windows was never meant to be there in the first place.
Watch a whole new generation of eco-system blossom, where REAL industry-standards and compatibility-by-design will be the key-factors driving technology in the right direction.

Its like when the mamals took over the dying dinosaurs, which was much more fun from there on ever since…