Surpass versus Replace!
The iPad can surpass Macs or PCs in total use and sales without replacing them.
The majority of Mac/PC purchasers don't need what a PC can offer beyond a tablet. More than half of all laptop and desktop PC buyers, both consumer and business, use no significant functionality on their PC that can't be done on a tablet (plus maybe accessories, such as a Bluetooth keyboard). Tons of home users only do email+web. Tons of business PCs only run point-of-sale or data entry apps, or web apps, or remote desktop, or presentations, stuff which can all be done with an iPad.
The real work will be done in the server closet or the cloud, not on a PC. Even power users may not use the full functionality of a Mac or PC most of the time. An iPad can replace that 2nd or 3rd laptop that's used for email in the living room, while the main machine is doing a movie render in the office.
So desktop and laptop PCs could easily fall to 10% of the market without completely being replaced, with the other 90% of personal computing purchases going to smartphones and tablets.
That would be a surpassing, not a replacement, just like PCs surpassed mainframes and minicomputers in the market. But IBM still sells mainframes to power user enterprises who need them, so mainframes haven't been completely replaced.
The iPad or any tablet for that matter will never replace my laptop.
The iPad can surpass Macs or PCs in total use and sales without replacing them.
The majority of Mac/PC purchasers don't need what a PC can offer beyond a tablet. More than half of all laptop and desktop PC buyers, both consumer and business, use no significant functionality on their PC that can't be done on a tablet (plus maybe accessories, such as a Bluetooth keyboard). Tons of home users only do email+web. Tons of business PCs only run point-of-sale or data entry apps, or web apps, or remote desktop, or presentations, stuff which can all be done with an iPad.
The real work will be done in the server closet or the cloud, not on a PC. Even power users may not use the full functionality of a Mac or PC most of the time. An iPad can replace that 2nd or 3rd laptop that's used for email in the living room, while the main machine is doing a movie render in the office.
So desktop and laptop PCs could easily fall to 10% of the market without completely being replaced, with the other 90% of personal computing purchases going to smartphones and tablets.
That would be a surpassing, not a replacement, just like PCs surpassed mainframes and minicomputers in the market. But IBM still sells mainframes to power user enterprises who need them, so mainframes haven't been completely replaced.