If MS would drop their requirements, in particular PAE/NX & whatever more "secure" features of CPU's required for Windows 8, many more would have moved forward. Many tried the first edition of the Windows 8 Consumer Preview beginning on 02/29/2012 & it ran on most any machine that XP/2000 would run on. It was with the Release Preview that MS spoiled the party & mandated these technologies to be in the CPU to install, so many ran the Consumer Preview until it ran out, or went back to their old OS.
Thing was, Windows 8 doesn't have the Aero interface, so it would have been a perfect fit for machines with XP. So was Windows 7 Home Basic, but MS decided to distribute it to "developing" regions of the world, again taking away a clear upgrade path. Being a former TechNet member, I ran 7 Home Basic on several older computers (two P3's), all of which ran better & notebooks had longer battery life. That was a blown MS opportunity to get XP users to move forward, they pre-sold Windows 7 HP for $49, Pro for $99, Home Basic could have easily sold for $39.
If MS wants to get customers off of XP, then there has to be some form of middle ground, some compromise. PAE, NX, SSE whatever, doesn't guarantee that a computer will be free of infections. It may reduce the chances, but I have seen no proof of that. I can state that I've had to clean moderate to severe infections of several computers (including one 2 month Windows 8 PC from the OEM) with these technologies, so what good are they?
I have a hunch that Windows 9 is going to be more of the same old song & dance, Windows 8 with more eye candy (& spying ability) & less of the things that's made Windows 7 the most popular OS on the planet today. After all, if Windows 8/8.1 was so damn good, why didn't everyone grab it with the Pro version was $40? Twice as many users downloaded the initial release of Windows 8 Consumer Preview over Windows 7 Beta, yet only a fraction of the same purchased it.
The only way for Windows 9 to push users off of XP is with a build from MS that will run on legacy hardware. These customers aren't going to throw out perfectly good running machines for $298 Wal Mart specials loaded with cheap, brittle plastic components that weighs 12-15 pounds to replace 30-40 pound solid PC's made of real steel. Many will continue to run XP, or if feasible, grab a copy of Windows 7 Home Premium when on promo at Newegg for $75.
And if Windows 9 resembles 8/8.1, then I've purchased my final Windows OS. If I have to buy a new computer, there are rights, we can rightfully demand a refund of whatever version of Windows is installed (per the MS EULA). If necessary, they can swap the HDD to a blank one, as I normally upgrade to a SSD as soon as practical anyway.
Plus recent reports from Europe have stated that Linux is more secure than Windows 8.1.
Cat