... And as such could be incorporated in your products:
https://maps-apis.googleblog.com/2017/01/open-sourcing-google-earth-enterprise.html
Quoting:
"Open-sourcing GEE allows our customer community to continue to improve and evolve the project in perpetuity. Note that the Google Earth Enterprise Client, Google Maps JavaScript® API V3 and Google Earth API will not be open sourced. The Enterprise Client will continue to be made available and updated. However, since GEE Fusion and GEE Server are being open-sourced, the imagery and terrain quadtree implementations used in these products will allow third-party developers to build viewers that can consume GEE Server Databases."
