Not sure this is a hobby site, there are certainly small business owners on this site that maintain their own work computers (or have their grandpa on this site that does the Windows 10 upgrades for them )
Say that upgrading a work computer to Windows 10 fails and the financial loss incurred is $1K per day. Say it takes 2 days to get it working again. It would be cheaper to get a new work computer in the first place, or not upgrading at all and holding out with an old OS as long as possible. The latter is very common, even for large businesses and government agencies. And no, these people are not all dummies, they have things to consider that hobbyists do not have to consider.
These considerations apply to all kinds of work computers: Windows, Apple, Linux, etc. As I wrote further above, in the past these considerations made me buy new work computers rather than upgrading old work computers (I did upgrade my hobby computers)
The possible game changer is SaaS (Software as a Service) that Microsoft is touting for Windows 10. But it would only be an actual game changer if upgrades don't fail (or have a failure rate of near zero). With the number of failures reported in threads like this, a professional running a home office, a dentist, etc. would certainly not upgrade. They would just buy a new work computer if the old one stops working, or do a scheduled replacement every 3 years or so, it is cheaper that way.
From my experience in business IT departments do testing before they port a new OS to the field and all users. And I would suspect that many other business have IT support that would do the same. The process is not as messed up as you make it seam.
But heck.. I only did this for over 20 years.
I don't see anything wrong with people that jump in with all feet and try everything new. I certainly see any reason to bash them. But at the same time, I don't see any reason that we that are less tech savvy should be bashed for our feeling cautious or wary.
Or am I misreading your post. Are you saying that only techies are welcome here?
I have three pc's upgraded and no particular problems.
Out in the real world both small businesses and large enterprises are in the middle of rolling out new operating systems on their existing systems as well as replacing old unsuitable hardware.
Of course the operating system the majority are upgrading to / or having installed on their new hardware is Microsoft Windows Seven.
This delay is normal with any business, as there is a requirement for full and detailed testing before a roll-out of new systems to what may be hundreds or thousands of users.
There is also the additional cause for delay due to the world banking crisis and recession of the last few years, companies have not been in a financial position to justify the immense outlay that a system wide upgrade needs.
Even if the Microsoft sales pitch is correct and this is the last ever new windows it will be likely that the business world will always be a few upgrades behind the general home user and even further behind the small number of enthusiasts that make up the membership of this and other similar on-line forums
And the question that I tossed further up is: when do you think will Windows 10 be introduced for work use?
In 1 year? 2 years? 3 years?
Frankly, if the answer is 3 years, then there is little incentive to upgrade an old work computer to Windows 10, I would just buy a new work computer with pre-installed Windows 10 as a scheduled replacement.
Many moons ago, somewhere around 286 era, I had to work hard to get my company owners to buy computer at all. Only after it became necessary to have a PC so I could reprogram and control some new production machines did they buy me new one. Only other computer at that time has a 286 laptop our accountant brought from home.