The U.S. constitution makes it quite clear that intellectual property exists for the benefit of citizens, to promote the advancement of useful knowledge and discoveries.
From Article 1, Section 8:
Congress shall have the Power to promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries.
I guess it's fair to say that 'the Progress of Science' is for the benefit of citizens, but there's definitely cutouts for the benefits of inventors & authors.
I think this muddiness definitely sits near the root of current IP debates.