They don't want people upgrading they want to sell you new all the time but offer you nothing hardly on a trade in
I prefer to upgrade and use the computer/laptop I trust and have got used to how it works and acts.
Good for you who use their Windows 10 for work, you are early work pioneers.
As I wrote further above, I have no issues with Windows 10 on my hobby computer either. I have used one my Office 365 subscriptions on that hobby computer, have a shared WiFi printer on my home LAN, etc., nothing of the usual stuff broke so far.
You missed that what I pointed out is something completely different, i.e. there are no early work pioneers on a couple of forums where I tossed up the issue, except that early work pioneers have come forward on this forum just now, surprise, surprise.
I myself have no problems at all playing pioneer for my hobby computer, but I prefer not to play pioneer for my work computer, the more so as I have no issues with my work computer either. I will wait until positive reviews on 'Windows 10 for work/office/business/commerce', etc. have become more common, it is a new OS after all.
I don't blame you for not wanting to make the switch but to claim that it's not ready for "work" is .. well an overstatement.
I might do what my grand daughter does every 3 years upgrade her car so she does not have to MOT it.
Being as my laptop is not that old I wont bother
also if still working ok then will just keep it updated with drivers until such time as it breaks my last laptop lasted me 5 years and I passed it onto my friend to learn on and it is still going ok.
He only goes on line for news and you tube so windows 7 does him.
Being a frequent visitor and contributor to some OEM support forums, let me provide some perspective that is NOT being presented here ...
1) Robots reading from scripts, just plain laziness; The few I'm on definitely do NOT present this impression. There are long and detailed threads where the support person is trying one thing after another to help the poster get their machine working. If this is being done by "robots", they are a lot smarter than the rest of us!
2) Only out to sell new machines: The OEM forums I'm one clearly indicate NO interest in selling new machines. Not once have I seen anything evenly remotely like that. Instead, the interest is in getting the person's "old" machine working well under Win10.
3) Don't know much about Win10: While this is often true, that makes the OEM forums no different than others. Most of the in-depth knowledge about how Win10 works is centered in forums like this one, and the MS Insider forum -- where folks have been using Win10 daily for months. But some of the OEM forums are building institutional knowledge about Win10 and you can see that in the responses.
4) Not using Win10 or going back to previous OS: The sad FACT is that while many older machines have upgraded to Win10 OK, many also have not. I have only tried two Win10 upgrades of Win7 machines and both failed -- miserably! An added complication is that some of the OEMs clearly are not interested in providing Win10 drivers for "older" machines, and while this is not a serious problem on some desktops, it CAN be a serious problem on laptops. Folks report stuff like display artifacts, nonworking WiFi, and faulty touchpads -- which (IMHO) renders your laptop pretty much useless. So, of course, if the choice is between running a new OS where the hardware has serious problems vs. running a prior OS where it worked perfectly, the best choice is the second --if what you want is a machine that works, not just Win10 "bragging rights".
As to comparing upgrading an older machine to Win10 like buying a new car with new features -- that's ridiculous! A more apt analogy would be upgrading an old car by adding new features. But what if those new features were unreliable: a new transmission that gets stuck in gears, new windshield wipers that fail in the rain, new headlights that suddenly go out in the dark! Wouldn't an older car where everything worked be superior to an upgraded one where the things fail?
Not everyone has had a "stellar" experience upgrading their older machines to Win10 -- and some just want to get their machine working well, again.
Well, the reason I post and get involved in computer tech is that it has become a sheer necessity nowadays to prevent issues in the first place.
I have a nice experiment for you: let your granddaughters persuade local businesses in town to upgrade for free to the latest and greatest Windows 10 Microsoft will thank you
On a more serious note, if a new OS could impact your revenues, things are not that simple.