I know a company -- many companies-- where there are people who do nothing all day but talk to people, send emails, and very occasionally produce presentations.

I know a company -- many companies-- where there are people who do nothing all day but talk to people, send emails, and very occasionally produce presentations. I knew a few of people at Disney consumer products who had jobs like that. Those people could probably sleep in their office some weeks and not have anything very bad happen. Every now and then, not even once a year, those people find and close deals that generate millions of dollars. By your definition they are worthless but really they are a crucial ingredient in setting up projects that create work for dozens of programmers, artists, writers, etc. If you don't understand why people exist in an organization, it may be because they are useless. But it may also be because you don't understand their purpose.