Which is why they're trying to crowd source the maintainership: the idea is that airports and giant retail stores will have a built-in incentive to keep their maps updated. And it might be true.

But I'm a little mixed on this. Google maps, while great and useful, isn't an open source project. The data is closed and proprietary and not useful to the community at large. I'd much rather this be done under the umbrella of OSM or the like, or if nothing else published as a separate data set subject to open licensing.