How much has it been monetized? How do we know only a small amount of it was released?

I should have said "profited from". I mean, The Intercept was built on them. Greenwald and crew have probably earned millions of dollars from them.

The US government claims that he took millions of documents. We haven't seen more than thousands, I think. And I've read claims that only a small percentage has been released.

the USG claim has been aggressively disputed by GG et al