It's convenience apple even has any google products on their phones. Once apple could do it themselves and give the user the best experience and functionality then why wouldn't you.
Because that stretches Apple thin. Makes them "Jacks of all trades". How about they concentrate on what they do good : hardware design, OS design, UI design. And leave what they aren't that good at to others that are : Search engines, online services like mapping, storage, e-mail, social networks.
That way, users get the best services on the best hardware with the best OS. Rather than meh services on good hardware (that could've been better if Apple had dedicated enough ressources to it) and on OK OS with UI design that's dated (only Apple doesn't have ressources to assign to it).
Remember folks,
Apple operations like the world's biggest startup. That's why often they release something and don't seem to update it much. If it doesn't make a big splash, it seems to get relegated to a back burner sometimes for years, before its either abandonned fully or they make another big go at it.
Apple lacks consistency in updating its things. iAds seems to have suffered the fate of a big splash, Keynote worthy release and then... nothing. Ping got it even worse. Many of the stock apps on iOS haven't really been updated properly since launch. They took until iOS 6 to "revamp" Maps, only they revamped the portion that didn't need revamping, the back-end...
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Am I the only person here who doesn't use maps like...ever?
You must never travel abroad, or heck, just go to new places around your town. I don't stare at maps while traveling, but I'll usually give them a quick glance over before leaving to spot a few key roads, and the last mile to get to my destination (the highway exit and the few turns required).
Honestly, there are so many new features in ios6, yet everyone is making it seem like maps is the only thing which matters. I am getting 4 new safari functions, panorama, new call options, do not disturb, 3g facetime and cool siri additions.
Everyone is making it seem like maps is the only thing that sucks. Everything else was just peachy if not overly major. DnD mode on iOS was fine, Safari got updates ? Could have fooled me, anyway, I use Chrome even though it can't use the Nitro engine. Panomara was a nice gimmick exactly once, I don't see how I'll use it, and I use Camera+ anyhow, but hey it's there. Siri is disabled on my phone so I wouldn't know.