Im afraid thats because for the most part we are stupid.
They make something shiny and over priced, and we buy it, (in droves).
They make something technologically crippled and over priced, and we buy it, (in droves).
They make something proprietary and over priced, and we buy it, (in droves).
We like how it looks and will always find a reason to defend their decisions instead of voting with our wallets. The worst part - in some cases we dont even try the competition before discounting it.
Windows 8 is a nice enough OS, as the hardware is equally nice, (which it wont as M$ arent into hardwarwe like that), Im off. Right now Apple meets my needs its just a shame they rip me off for the privilege.