I can understand viewing Mac computers as being in a niche market (since they are relatively expensive compared to PCs), but with over 1 billion apps downloads(although many free) in roughly in 9 months, the iPhone platform is hardly a niche, it's quickly becoming mainstream. If the prices continue to come down and the 3.0 Release addresses some of major deficiencies that the product has since launching, it's going to be difficult to ignore. I have over 22 years of programming experience (C/Unix/Java, etc), last year I jumped on the iPhone bandwagon (accidentally) after attending a week (7days) long Objective-C course where half of the final day(unexpectedly) was an introduction to the iPhone. What shocked me was how similar the iPhone OS was to the Mac OS running on the desktop. What this means is the 10+ years of experience Apple has on the OS X desktop was literally transfered to the mobile device. What this means is, if you're a desktop OS X programmer, you already knew most of what was needed to develop an application. That is one of the major reasons there are so many apps in a relatively short amount of time. But also, the iPhone OS is ahead of the curve because Apple did not need to invent it from scratch. What this really means is all of the other manufacturer are several years behind and playing catch-up.
Now, I don't want to make it sound like Apple is perfect by any means. In fact, their application review process is very problematic. Sometimes, your application gets lost(not reviewed for weeks) in the process. They literally work 7 days a week to review apps. So, it appears they are simply swamped but that is really no excuse. I don't mind delays as long as I am in the loop. Not knowing when an urgent fix is going to make it into the store is very frustrating.
So, Apple has its problems. But back to the topic. So, an iPhone specific section may not be needed at the moment but something dealing with mobile apps may be useful to the users. But based on the number of new apps dealing with lotteries at the app store, it may quickly become an iPhone/iPod Touch section.