Source: https://en.wikipedia.org/wiki/Graph_drawing#/media/File:Social_Network_Analysis_Visualization.png
"The whole thing is more than the sum of its parts"
(Aristoteles)
... that's why we connect the parts and use the additional benefit of the arised network
Do you think it's impossible to handle such an amount of data in one single "place"?
Just look at the well used social networks like Facebook or Instagram. A few years ago nobody could imagine that billions of people would interact in that way and create millions of data objects every day.
The technical tools for handling networks (graphs) of that scale are available. We only have to adapt the use of Graph databases for industrial purposes. This is what we offer.