#7 Microsoft

What it had: First to rule tablet market.

What it missed: the company was the first to invent modern tablet PC. Though it was a bit ahead of it’s time, the cheap capacitive display, which made users to ditch the stylus, and mobile OS rather than fully blown windows OS would have done justice to tablet, the result—masses took it to be weird gadget.

After nearly a decade, the company is now reinventing itself, with range of ‘surface’ branded tablets. No matter they have started it, but are just competing with Apple iPads now.    

#6 AT&T

What it had: For many years, a network provider for Apple gadgets.

What it missed: Providing network service to the most desirable gadgets in the world could be a coveting aspect for network providers. AT & T was not serious about the opportunity as service providers for Apple. It failed heavily in voice and data networks in major cities, put its self up for mockery thereby drove Apple to opt for other network providers. The big deal lost even without putting an effort to hold it.