Honestly, here's how I would say this should play out:
1) Google Maps produces an app that is demonstrably better than that on iOS6 (already done, and not hard to demonstrate, read the news)
2) Google offer said app to Apple with one of the primary conditions being Apple end all lawsuits against the Android ecosystem. Not the handset maker infringements for physical design of the smartphones and tablets, but "how" the OS works. Also, fit in a directive that forces Apple to start licensing all of their patents, design and utility, at a discounted rate to any OEM that makes smartphones and tablets using the Android OS. Let's say, for 0.125% of the device profit margin, not to be confused as sale price, which a certain San Jose court and jury confused in August.
If Apple were to go ahead and take the deal, many benefits follow. Stock prices will continue rising due to more iPhone 5 purchases. People will be more inclined to continue buying other Apple products for integration in their personal and professional lives. This is a cycle that feeds on itself, and Apple will not lose that much money for the amount of market share they will gain.
The other end of the spectrum, if Apple were to refuse, is that they can watch their precious stock price plummet when the returns of iPhone 5's become monstrous and people stop moving to Apple products due to iOS 6 problems. Android already has worldwide market share; refusing a deal like this could make that lead even larger and further out of Apple's ability to influence.
The iPhone, iPad, and iOS are great, but Apple has made some serious blunders and continues to do so by slighting their parts manufacturers and Android OEM's. I hope the Android ecosystem at large takes advantage of this serious misstep and levels the playing field to what it should be: Competition by making better products, not whining when someone steals your toy.