Mage, you're either woefully misinformed yourself, or deliberately misinforming others. Google has brought in or copied everything? Besides the obvious exceptions of the PageRank concept and map/reduce, here are plenty more exceptions.
Facebook hasn't innovated technically? More exceptions.
Never heard of Spanner or Borg/Kubernetes or Cassandra or HHVM or Open Compute? That's just ignorance. Look, I'm sensitive to the issues of privacy and market dominance and so on, but the specific claim here is that these two companies are bad for *innovation* and that's clearly false. Name a company you like better. Let's see if they contribute as much to innovation. Highly unlikely.