You (and google lawyers) say that, yet every feature of your phone is tied to a google service app, which can only be installed in a signed fashion by the OEM that build and sold that device.
GPS and all other radio (except bluetooth) are severely crippled without it. And location provider accelerators (like the one from mozilla) cannot even be installed (only with root, which is moot since that is too difficult or impossible on every single device --even developer edition ones)
video acceleration and camera are other aspects that goes out if you don't have google secret sauce. but those are more related to chip manufaturer NDAs than anything else. Still google and OEMs are the de facto gatekeepers as far as smart phone buyers are concerned.