Most devices that you can buy for under $400 now run on ARM chips (frequently Mediatek). We're talking tablets (with keyboards), convertibles, even outright laptops (i.e. "netbooks"). These things qualify as computers. They are replacing traditional laptops, just as those replaced desktops.
If we're looking at sub-$400 computers, especially on ARM, it seems like we have to include the large segment of ChromeOS devices that only run Linux out of the box (or at all, generally).
Referring to Intel Chromebooks (i.e. laptops), that segment is now dwindling in size much as its predecessor (Intel Windows netbooks) did a few years ago. Most low-end ChromeOS devices now run on ARM. And Android is nipping at their heels.
Sure. And all of those devices run Linux. Some of them even run other Linux OSs decently; one of my daily drivers is an ARM Chromebook running postmarketos.
It is not trivial to get FOSS Linux onto a write-protected Intel Chromebook, compared to a Windows netbook of yore. It is harder still to get it onto an ARM Chromebook or Android tablet. PostmarketOS is a bit simpler (or at least better documented) but it is not a full Linux distro.
Installing a fully-fledged FOSS OS on low-end general-purpose computing hardware is getting harder. Certainly for the non-techies who have to be part of FOSS if it is to survive.
Most devices in that class I see run some vendor flavor of Android or ChromeOS and not Windows, so definitionally speaking they do run Linux out of the box.
Yes but it's a bit academic. The problem is that getting a FOSS distro of Linux onto low-end general-purpose computing hardware is harder now than it was a decade ago. I speak from bitter recent experience.
Oh, I know perfectly well what you mean. The move to the SoC paradigm has serious implications for the future of computing freedom. I can't imagine how we might be able to fight this crap, realistically.