Why do you assume that the problem is the definition of "long time" and not the definition of "lust after." It seems that you think everyone is lusting after the iPad? I know I am not lusting after the iPad, but I'm not a mac lover. The iPad has certainly not matched the lust inducing levels of the iphone or ipod or osx.
The iPad held 73% of the tablet market last year, most of which came from market entrants who entered solely for the iPad. I don't know what by metric you're judging 'lust' (hopefully it's not just your desire), but its hard to imagine a more impressive performance.