TLDR: The future are linux hardware vendors, governments deciding to use linux, and RISC-V+ARM.

There are already a few linux hardware vendors out there and my favorites are Tuxedo Computers as well as Starlabs and Slimbook (the guys who make the KDE laptop. Not to be outdone by linux phone vendors like Pine64, Purism, and Volla. We need more of them.
Hopefully they will have the funds to start marketing and ad campaigns to change the image of linux from "just for geeks" or "only if you have spare time" to something like "better for privacy", "the only option for true freedom", "cheap but classy", "subscribe to nothing", etc.

Linux has no problem providing a fluid experience with RISC-V and ARM, while windows struggles - especially due to the amount of proprietary and legacy software that exists on it. Windows might be able to prepare for it and provide a translation layer or VM for those things, but probably not with a good experience.

Finally, governments. I thank Trump a lot for this: getting China to start accelerate ditching Microsoft. The EU is also wary of Trump winning again to start a tradewar + there is an EU level decision to use opensource. Countries are slow to implement this decree, but I only see it accelerating and countries wising up to international collaboration to create either their own distro (e.g EULinux or something), or paying emergent opensource vendors to write solutions for them.

I don't believe this will be done before 2030, probably 2035 we might see ~50% of government desktops and laptops on linux, but the future is very difficult to predict.