Unfortunately trends never stay. I think it takes more than just 10 years to dominate Linux in the desktop market. If it ever happens. I mean not even Apple could break it, and that is a huge company. There is a point when the growth slow down. In example the initial adoption rate is often higher than the last remaining. We don’t even know what Microsoft will do. Remember Windows XP? The trends were different then. Remember Windows 8? Adoption rate doesn’t work like a simple graph.

Linux desktop does not need to be “dominant”, it just needs big enough to be “relevant”. I would be flabbergasted if we reach 30% in 20 years.