When I was in college in 1998, and RedHat was at version 5 we dreamed of a linux desktop world. When I started work in 2000, linux on the desktop was SO CLOSE. Windows was sucking wind; there were no real alternatives; the *NIX world was shitting the bed and we had a shot. Business owners were so fed up with Microsoft's BS that they were willing to look at alternatives; and the Balmer era started and we really had a good shot - the guy was plain scary.
Then Mac OS X came along, replaced X Windows, something the linux community had convinced itself was virtually impossible. ... Then Nadella came along at Microsoft.
And the Linux community kept in-fighting.
And all of that is virtually irrelevant. Mostly people go to the store to buy a computer. It's one of two stores basically; the Apple store because Apple, or a store like BestBuy where they want to spend as little money as possible as quickly as possible to get "a computer" - it's either Windows or a Chromebook. Then there are gamers who custom build a honking PC running Windows because games (or an Alienware). Then there's the last little bit of the market - enthusiasts who actually care, and a few of them run Linux. That fraction of a fraction is Linux on the desktop's share. Suzie in accounting doesn't care. Suzie's boss, she doesn't care either. IT doesn't care. They just don't. Maybe, one guy in IT does; and he makes a lot of noise, but ultimately quits in frustration, goes to the next company and does the same thing; rinse repeat for his entire career. Even IF there was a compelling case for Linux on the desktop, and there isn't; nobody actually cares enough. Even developers get handed shitty 3 year old laptops to work on at a lot of companies. Mostly corporate IT isn't a meritocracy, it's the lowest common denominator. How many cheap employees can be hired to maintain the fleet of aging hardware that the company financially has to amortize over 5 years. At the other end of the scale, you've got Google, Amazon etc., and they're shipping Macs to power-users because they're low TCO, run all the *nix stuff, and are easy to deal with in a Pandemic.
Unless Linux on the desktop is at least twice as good as something else, it won't even get a look. Didn't last year, the year before, all the way back to 2000. Unless somebody come up with a good coherent plan that's well managed and driven to market, there won't be linux on the desktop. Ever.