As the Windows 8 launch date gets closer will it be a success or failure

As the Windows 8 launch date gets closer will it be a success or failure just like Windows Vista was a few years go. 

The success or failure of the OS depends on a few things, but one of the main areas that the Windows os where it does shine out above the competition is in its  flexibility in terms of being able to many things  with it that cannot be done on iOS or Android, such as it’s the only OS that offers compatibility with various hardware peripherals through usb connections, such as printers and other hardware devices and it’s the only OS which offers a full access to a file system without the need to jailbreak the OS. It’s also the only OS that is especially in the case of the Windows 8 none rt version of Windows to offer access to adobe flash websites, which still is used by a large percent of the Internet today.  However it’s important to point out that the rt version is likely to have a limited version of the adobe flash player that will come as not a plug in but instead will be built into the Windows ie metro app, which will give you access to a limited number of flash based websites. Also the none rt version of Windows is the only OS that will give you access to all the various digital media stores such iTunes, the  Google play store and the other various digital media stores.   
All this does highlight the other oses short cummings compared against the Windows os, such as in the case of Android it has a fragmentation and security issues, which results in app instabilities at times on certain devices. And in the case of iOS, the restrictive nature of the OS in terms of buying and sharing apps and digital media outside iTunes severely limits the usefulness of the OS.  So these issues with the other oses should give the Windows OS a fighting chance in determining it’s fate.
In conclusion the success will depend on a few other things as well, such a advertising, hardware, app availability. If they can get within a year most of these bases covered, then the os might stand a good chance of succeeding. But with the Windows OS having over 80 of the market should further increase the odd of it succeeding.   
The fate of the rt version of Windows that will run on the arm processor will be mainly dependent on whether the Windows app store can provide a decent selection of apps, due to it being unable to run Windows 7 legacy apps.  The selection of apps available will be dependant on how well the OS sells, however it has a fighting chance of succeeding, because the metro apps also work on the none rt version of Windows that still commands over 80 percent of the market in terms of sales. So then in reality this could aid the rapid growth of apps and then act as a catalyst for the  possible success for the Windows rt version of the OS.