Earlier quoted context omitted.
Maps is a great example of the difference because, wait for it, Apple never wanted to be in the mapping business. People are comparing Apple and Google and forgetting that the two companies ambitions are completely different. Google wants the full vampire squid platter. It wants to be your phone OS, your browser, your desktop OS, your search company, your video site, your social network, your office software solution…
You can't compare the browser situation however many years ago and the Maps calamity. Google's app was hardly a "shitty" alternative, but as others have indicated the Apple response is mostly due to other reasons. How many iOS users rejoiced when Google Maps got rereleased?
The pre-iOS6 app wasn't "Google's app".
It was Apple's Maps app which used Google-licensed data. Insofar as it was neglected, it was neglected because Apple neglected to improve it and declined to license additional uses of the data (like for turn-by-turn nav).