Are there another kind of company that has 2 billion plus users? Can you store 500 edges * 2 billion users in a off the shelf database system? That was availabl

Are there another kind of company that has 2 billion plus users? Can you store 500 edges * 2 billion users in a off the shelf database system? That was available in 2009? It is from scale and necessity that this kind of software is created.