Where's the analysis of how much Facebook benefits from other open source software? I'm sure billions of it's valuation can be attributed to everything from Lin

Where's the analysis of how much Facebook benefits from other open source software? I'm sure billions of it's valuation can be attributed to everything from Linux that powers it's servers & networking to git & mysql, ... Coming squarely to react - how many community react libraries has Facebook used in it's apps? Isn't that the community doing Facebook's work for them? And how many bugs in react were found & fixed by the community? How many features were added by the community? React's relationship, as with other open source, is highly symbiotic. David is deeply flawed in making it seem like Facebook is the monetary loser in this relationship