Instead what you need is a company large enough to design an OE from end-to-end and re-use existing pieces where possible (Linux kernel, some common GNU tools, etc.). And, like Microsoft, Apple, and Google, this company has to depend on consumer sales to drive profits. In other words, make a turd and you get $0. (This is the opposite of the GNOME mentality... where they can force their "vision" on the product, no matter how batshit insane it is, because they don't have to answer to customers at all.)
Now unfortunately there aren't too many companies that have the resources to do this. It's kind of like trying to make a car company to go up against Ford and GM -- the latter have years and years of accumulated experience. But what we do know is that the current distros are kind of wallowing around in the same nerdiocrity year after year after year without really making any inroads in terms of marketshare, and what's baffling is that people in these efforts still can't figure out why.
So I completely reject the idea of a "Linux desktop", just as a "Linux mobile" would likewise be a failure. We need a desktop OE that has Linux at its core and that's about it. Whether it be Ubuntu or ChromeOS or Android or whatever, this focus on commonality and having a "community project" is just a waste of time because it doesn't reflect reality. Creating a good desktop OS requires a ton of focus and concerted effort and, yes, hierarchy.
JMO of course.