My understanding of Google Fiber is that they ran into to many headaches from existing telecom companies while trying to expand their fiber infrastructure. Instead of continuing to fight such an uphill battle they are trying to make a wireless approach work.

I haven't heard much recently from their more standard wireless attempts (other than Loom being used in Puerto Rico) but they did invest (jointly with Fidelity) $1 billion into SpaceX. The assumption is the SpaceX investments are specifically to support the SpaceX Starlink constellation which if successful could bring wireless internet to pretty much all of the planet.