Apple isn't capping data, AT&T is. It's not so much to address network issues, I think, but more so to attract people who don't use data as much to their plans, because they won't have to pay 30 bucks a month for something they don't really use. If you had the option and you only used about 100mb per month or so on your Eris, wouldn't you take a cheaper data plan if you could? It's just AT&T's way of attracting other people to their phone service.
And Apple claims their things are better in a few ways. When it comes to resolution, for example, the screen on the iPhone 4 really is better than most other phones out there, with the only exceptions I really know of being the HD2 and the EVO 4G. So they outright say, "This display is better and amazing than anything you have seen". BUT they compare it to the iPhone 3GS, to make it seem that much better. They don't mention the HD2 or EVO obviously. But when it comes to things like multi-tasking (which has been around for quite some time), they claim it's a better way to do it. I sort of like Apple's new way of multi-tasking. There are better ways to do it, but Apple is marketing it as a way to make things easier, and easier and better to use than other options. Which is true for most things they market like that. The only thing I don't think is made better by an Apple OS is their navigation. Even with the iOS, it's still hard to figure out how to do things in menus sometimes. Or in an app on my iPod, I sometimes find myself hitting the menu button and exiting instead of a back or previous touch button at the top. I love Android's main buttons, to me they make things easier to understand. The way PCs, Android, and most other devices work to me just makes more sense logically, but then again it could just be biased because I grew up on Windows and not Apple.