Tello Athenaios really nails it even if half his post was full of things I don't entirely understand.

Though I would like to add/correct a bit.

Firstly, it can take up to a month or more from the time a developer hands in any app to when it actually appears in the AppStore, this is because Apple does test them.

Secondly, this testing sort of reared it's ugly head when they refused the Opera browser, reason unknown to me and an Amiga emulator because, as they said, it allowed the execution of external code, which is a nono for security concerns, yes, I just read the thing about root access but doesn't mean you have to make the door wide open IMO.

Thirdly, Opera Mini has been allowed lately and I'm using it all the time now, this was surprising even to me, but may be because they just launched their own advertisement service for apps that will probably make up for the lost revenue due to people using Opera instead of Safari.

And concerning Adobe, I hate them, more than Apple(look, I got an iPhone and it's really nice but that doesn't mean I have to love Apple or think it's perfect), they got a quasi-monopole on image editing software and Flash is just...well, it doesn't work correctly in my Linux Opera(no, not going to use Firefox except for a few flash videos), there was no 64bit Linux version at all last time I checked and even in Windows it's using ressources like crazy and generally acting up now and then. Like apple, I can't wait for html5.
Oh and I use Corel Graphics Suite 12, it's perfectly fine for doing all the things I want to do with pictures, gimp works, too, although I hate the layout.

Concerning openness, it has benefits and drawbacks, the android store is open it seems but I read it got flushed with fake homebanking apps that would steal your login data and bank passwords before it was detected and they were deleted, it seems such programs would not get through Apple's testing which I consider a great plus as I can trust that at least around 99% of what the AppStore offers me is actually safe and not a package of viruses and trojans(doesn't mean it's bug-free and flawless but most apps get quite a few free patches with new features, sometimes complete redesigns, bug fixes etc.).