Oculus VR, Giphy, Mapillary and more are also successful in their space. Just like Google's successes, the "successes" are actually built by others (almost all

Oculus VR, Giphy, Mapillary and more are also successful in their space. Just like Google's successes, the "successes" are actually built by others (almost all you list were acquisitions), but the difference (as mentioned before) is that Google sometimes acquire products for the product itself, while Facebook generally doesn't.