The difference wasn't really the linux desktop itself. There never was a "year of the linux desktop". It seems to be everything else. The webification of everything slew the desktop native app and the ubiquity of a gazillion different smartphones primed people to accept new UI experiences.
The business world is finally coming out of the place where everything it does has to be rammed through the Office/Excel/Powerpoint/Exchange funnel no matter how it distorts the outcome.