Scepticalscribe
macrumors Haswell
Do you honestly think that most (not all) consumers actually need Windows or MacOS for day to day computing?
Anyone who has to write in any way extensively for a living will not find an iPad comfortable to use.
I accept that for some people the iPad will fulfil most - if not all of their needs. Likewise, others will switch between devices, using the iPad for some things and a computer with greater power (and a keyboard) for others.
But it will not replace the use of other devices, except for some people - chiefly, those for whom the consumption of content is what defines their online lives.
But for those who create content, the iPad is insufficient for their needs. But they will - or may use - an Pad for other things.