The controversy elsewhere in these comments is over whether it’s recording, and the server is slurping up, the video footage, during AR mode. We know they do so on the “scans” they have you do, where you walk around something taking video, but I don’t think there’s proof that having AR on = uploading to the server. Should be easy to prove one way or the other by observing bandwidth usage.
The Pokémon Go data is for small little islands around their points of interest (pokestops).
It’s not a detailed city map. The data is extremely sparse and only covers little tiny bubble around their sparse in game POIs.
The way it was represented as some sort of high resolution city map or world model was quite ridiculous.