When people are talking about Linux Desktop they usually mean GNU/Linux. Chrome OS and Android both use the Linux kernel, but they aren’t GNU/Linux like we understand Linux desktop.
GNU/Linux needs a company that will create a Macintosh equivalent. A company that will design quality hardware. Restrict the hardware they support tightly, but highly optimise the drivers in their devices. Selling their equipment with a distro that’s well supported with bug testing and user support. Each update being tested on all their devices.
This would allow people to buy their devices without much thought.
I think people in the past thought this could be Ubuntu and Canonical. But their business is server, so there desktop will never get to the place it needs to be.
The steam deck is pushing Linux closer to this place. But I don’t think it will be enough.