[paintman252]

Sure, they OWN a bunch of stuff, but (besides Facebook/Instagram/Whatsup) none of it is a massive success.

It's not like Google which has 1)Search 2)YouTube 3)Maps 4)Android 5)Chrome 6)Gmail 7)Analytics just from top of my head

[capableweb]

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.