What Actually Explains the Behavior of Recruiting Groups Like Pinpoint Partners?

I just don't get it. Like do they somehow monetize the resumes they get sent? Sell the email and contact info of applicants? Sell the resume template???

I just cannot see any other way, outside of sheer idiocy, in which a recruitment firm's recruiters would go about their business in the way these people do.

They literally spam roles (that I don't believe they even have exclusive engagements for) at the entire world to such an extent that they can't even track all the inquiries they get. If I were a recruiter actually making an honest effort to fill a role I was hired to fill, I feel like I would just reach out to specific people who I know meet the profile of what my client is looking for? These guys just blast like a 100K person email list for EACH single role. How is that efficient? That's like creating a buyers list for an M&A deal that has 10K names on it that were pulled completely at random and then you haplessly fail to keep up with all the responses and kinda just chose groups at random to put in front of management. 

Like there is running a broad process and then there is industrial grade spam brigading, and these gentlemen have crossed so far into the second category you couldn't pull them out with a rope.