Pre-release iPhone firmware 2.0 confirms 3G iPhone is coming soon
iphonehacks.com
iphonehacks.com
True competition will come from a company with no such issue to worry about.
The iPhone is capable of doing quick mobile browsing while you are standing in line or at a bar, but there's no way it replaces anyones laptop in its entirety.
arn
Not for much longer. Have you noticed that the most capable phones are getting larger and the least capable laptops are getting smaller. And both are available with Windows, Linux and MacOS X. See http://news.ycombinator.com/item?id=186508 a possible future mix.
If you as an example could cannibalise the Laptop market by 100 units and you had 10% share of same you would only loose 10 unit sales in the first market and gain 100 units in the other market. In this case smart phones. Assume a 3 to 1 price ratio you would gain $2 for every 1$ you lost.