Maybe there is or will be some totalitarian dictatorship with an extremely technology savvy leader who cares about getting all the geographical information up to date on pain of death... No? Then be really happy that Google is as good as it is.

In the town my Dad lives in, he tried to use a GPS system. The official maps of the town he was in showed the highway as a power line, the power line as the highway, had the centerline of the road he lives on in his yard, and included the road that was made by the original surveyor when he was drunk off his sit bones at home surrounded by his partners Jack Daniels and Jimmy Bean on the clock claiming to be in the field. Someone actually built a road there, so that they could sell the properties off of the road online, but it is a rough gravel road that literally is at a 35-40 degree angle and can only be managed by a tracked vehicle or an ATV on a good day.

Those maps, in turn, had been taken directly from the munincipal (county) government, which was using them for taxes and planning and the like.

This isn't even an unusual thing. Google Maps is like, the best map data in the world in most cases.