Microsoft has consistently failed trying to make a tablet do everything a PC does, nobody wanted it and it never took off, they tried several times and failed.
NOT ... in my personal experience. I bought one of the ORIGINAL Fujitsu Tablet PCs, running XP, and used it at work with greate success. It had a twistable screen that allowed for the use of a stylus -- which worked great with Windows Journal. I was able to use it to completely replace the printed Day-Timer that I had used before.
With added memory, and other hardware upgrades, it provide a 10-hour (that's right - 10 HOURS) battery life, which lasted me all day such that, unlike everyone else that was carrying around chargers, I was able to take it around all day and never had to plug it in.
I was able to upgrade it to Vista, and then to Window 7 -- and all along, ALL of the hardware worked without any problems at all.
I only retired it last year (after SIX years of use) when the project I was moved to prohibited folks from bringing in their personal laptops. I even tried Win8 on it, and that worked well, as well.
But ... it was clearly aimed at the Enterprise market, where folks wanted an alternative to a laptop -- which worked well for me because I was able to write on the surface and have my notes transformed to text -- and since I could train it to recognize my handwriting, it got better than 90% conversion rate.
Everyone who saw it was amazed and wanted to find out where to get one -- and, of course, once they found out what it cost, no one else bought one.
Apple re imagined what the tablet should do and it sold millions. That's what the iPad did brilliantly, it redefined the tablet,
Agree, but unlike the original Tablet PCs, Apple redefined the Tablet as a consumer Entertainment device, basically, a TOY for the well-off.
Now the cheap copies are selling big. Consumers who never needed the power of a PC have stopped buying them in favour of simple tablets that do what they need.
If you mean the Android tablets, you're right -- but, once again, they're primarily Entertainment devices. Quite a few folks I know bought these and were SURPRISED to learn that they could NOT install MS Office on them! (Don't get me started with the recent Wine for Android -- that's an entirely different subject).
Microsoft has decided all the people who just want a simple tablet are wrong and what they really want and need is the full power PC again but in a 10 inch tablet. They are wrong again and will fail in this market again and whilst doing so they have pissed off the people who really make them their money, business and professionals who do need a proper PC and a proper desktop OS without a mobile phone interface.
Sorry to say, but you're probably right in this, too -- although -- the recent Acer announcements of tablets (the new SLATEs) that include a stylus might resurrect the features of the original Tablet PCs -- but I'm not sure anyone really wants those anymore.