I disagree. The beauty of open source is that many philosophies have room to prosper. The Linux ecosystem is not the Apple ecosystem.
It isn't about hegemony but rather a free marketplace of ideas and philosophies that gives its users a depth of choice between desktops and configurability within desktops that you can't find in any other operating system. So with your philosophy the "year of the Linux desktop" has already happened and is continuing to.
In other words it's ok for people quit obsessing over low market-share and instead enjoy their freedom.
* Not entirely true... there are certainly commercial offerings and financial backing for the ecosystem, though I'm certain it would still exist without them.
I don't actually think that is ever happening, and I'm totally fine with it.