Why? You upgrade your phone each release? Chrome too. Is your cell phone 10 years old?
Windows 10 has a fast and slow rings. Slow is pro and upgraded every other year. Enterprise is 3 years. Running 10 year old operating systems is rediculous and puts an undue burden on Web and software developers. Internet users suffer as a result. See IE 6?
Windows 10 is designed to be upgraded via sccm and each release will be a
Businesses have still been buying Windows 7, AFAICT. Once Windows 10 is out, they may well be more receptive.
This one is not difficult for Microsoft to get right. They had the right interface w/ Windows 7 on desktops/laptops. That needs to be the Windows 10 interface for those devices. For tablets, one could be given a choice of the 7 or 8 interface, and for phones, the interface is just fine.
The issue that MS has in the Tablet/phone space is that Windows RT/Windows Phone is a late entrant to the market, and alien to the ARM platform - Windows CE notwithstanding. Also, MS doesn't have the Wintel apps to leverage that space, and is therefore at a disadvantage. I have a Lumia, and the main issue for me has never been the interface. It's the fact that most of the apps suck, and also, most of the popular apps in the market are present on iOS and Android, but not on the Windows Phone. As a result, the phone is partly useful for professionals (has Skype, Office, OneNote, ADP, Concur, and a few useful apps) but pretty poor as a general purpose phone.
While Microsoft has done a good job in having a common development platform, it would do well to regulate what goes into its app store. Right now, too much of it is crap, in sharp contrast to iOS. Not sure about Android
Always draw your curves, then plot your reading.