The reuse value of this kind of data is critically dependant on the methodology used to create the data. A lot of Google data tends to understandably be focused on their own products and lack quality in a more generic sense. Something as simple as a building outline can be represented in several different ways depending on what you need and require a completely different methodology. The building outline needed by law enforcement is different to what an architect or pizza delivery company needz.

When specific about the type of data there is a lot less competition than you might expect. And for commercial companies it makes sense to make as much money as possible front that.