How and why do computers with no OS find their way to market
Because there is no reason they can't? There are regions in the world where it's fairly common (from new), it's just rare that it crosses to the US or Europe.
I'm not going to trawl through EULA for various versions of Windows but, from memory, there's verbiage to the effect of 'licenses can only be sold with the original hardware'. While somewhat open to interpretation, it's entirely possible that sellers of
used hardware especially, are wary of such terms - an HDD/SDD may have been replaced, RAM upgraded etc, potentially breaching the EULA on a trivial level - which may or may not hold up in court (in Europe, I believe it's been tested, and doesn't)..... And therefor err on the side of caution to avoid the (slim) potential wrath of a corporate giant such as MS.
There's an e-recycler close to me, who sells substantial volume of Desktops/Laptops with no OS/drive for this reason. Most of their systems still have legible product key stickers on them (for older stuff).
Their main reasons are:
- They don't want the potential hassle of MS knocking at their door, however slim the chances are.
- They're don't want to take the risk of selling HDDs/SSDs full stop, knowing that user data can be recovered, more often than not. While they could DBAN each drive before sale, the time investment is not worthwhile.
if I bought one, what would I be getting? An impeccably cared-for machine retired by a corporation that made a special deal with the maker, or a piece of junk left over after a pirate sold off the license? What is the likelihood that it would come with an original license, so that i would just have to replace the hard disk if there was none and reinstall Windows?
Depends on the listing/seller. Clearly too many variables to state definitively.
Technically, if a laptop previously had Windows 10 (or 8, I think) installed, it would very likely re-activate with a "digital license", after you install a drive/OS - as it's tied to hardware/motherboard/BIOS. Even with that though, it doesn't mean the license hasn't been reused elsewhere (tied to a MS account and reactivated), which runs the risk of it de-activating at some point in the future.
a search for Lenovo Thinkpad alone yielded about 1700 hits; all but 26 specified some form of Windows, and those broke down as: not specified 23, Linux 3.
So 26/1700, 98.5% ship with some form of Windows. The remaining 1.5% likely includes sellers who have removed HDDs/SSDs for security purposes - and are selling off the 'shell'. Ie, they've no desire to source a drive and install Windows, when they're not likely to recoup the cost of a (new) HDD + time spend during the sale.
Even allowing for bungled checklists, that suggests that people who install Linux on laptops are actually quite rare.
That really isn't what that suggests, at all. Typically, users who install Linux on laptops are more tech-savvy, and more than capable of doing so themselves. They are not the same demographic who 'need' Windows installed from the off, like most consumers.
I do agree, volume-wise, Linux is far from significant.