Get Used to It
If making a usable, reliable mapping system is primarily about organization, then there's maybe no one better suited to it than Google. But that doesn't mean Apple can't or won't catch up. It will get better. It has to. But that kind of improvement takes time.
Apple's road to wellness is relatively simple: It has to get better foreign data partners, for one. It's got to gather information from the millions and millions of iPhones and iPads that are out there (a huge advantage) about what things are actually where. And for that matter, it needs its own version of MapMaker to turn embarrassing Tumblrs into useful user-generated data.
Simple, though, isn't fast. Those deals take time to put in place, and even with an unprecedented number of iOS devices beaming back correct information, it could take years to make Maps whole.
Even quick fix solutions for Apple, however farfetched, wouldn't happen overnight. That goes for a high profile acquisition like Garmin, or Nokia's maps division if it goes under and Microsoft does not buy it whole, or anything else that could possibly inject an instantaneous shot of competence into Apple Maps. And that's if any of those things were remotely likely to happen. They're not.
Will a Google Maps iOS app save you? A little. But even if Google becomes a knight in GPS armor, you'll still likely be stuck using Apple for turn-by-turn navigation, since Google Maps functionality wouldn't extend to third party apps. Ditto Waze or Navigon or any other third-party map app already available. Some are good, some aren't; some are expensive, some aren't; but none are integrated as seamlessly as first party software, like Android's Navigation and Windows Phone's Nokia Maps are.
So yes, Apple's going to fix this. It has to. Maybe it wrangles up more and better partners, and launches the fleet of Jony Ive-designed Apple View cars. But that almost definitely won't make it into an iOS 6 update. Or into iOS 7 or iOS 8, for that matter. For now, you should get cozy with the idea that your first party iPhone maps might just drive you off the side of a bridge.