People in the consumer market found out they can do what they need to do with a tablet and not be concerned that its not Windows iPads and Androids get the job done for most home users and for many business users.
That is the point of this topic. What you say is what every blogger says, but the numbers are telling otherwise : People do not replace laptop and pc with tablets. Check the link I gave, it is the number of laptop shipment from 2008. It did not slow down one bit. The effect of a bad Windows version is way more important to shipment than the release of any android or istuff. That's what I don't understand : why we have the same numbers but different interpretation.