[citation][nom]SneakySnake[/nom]Look at droid post iPhone (hint: it's freaking amazing)look at tablets pre and post iPad[/citation]
OK I am seriously tired of this one, forget about the iPad completely and think about what the HARDWARE was like when the old tablet were out and what OSes were run on them? Wanna know the answer? BIG, HOT, x86 CPUs and Windows for an OS, there were no small OSes that could have made them usable, Windows was then (and still is ATM) x86 only. If Apple were to have made a tablet back then guess what it would have looked like? It would have been about as thick as the Windows ones since that is what was needed with that hardware.
It was not Apple that made tablets thinner and sleeker, it was ARM that allowed it, them making their CPUs and GPUs powerful enough and cool enough allowed tablets to be so thin. ARM is the one who changed the entire mobile industry, without their Cortex CPUs that power pretty much every smartphone out now neither iOS nor Android would be where they are now. The thinner and sleeker tablet was an evolution based on the available technology, you can even see this in the old tablets, as Intel made their CPUs smaller and cooler the tablets got thinner and thinner.