prodom

From pro (“professional”) +‎ -dom, modelled after fandom.

prodom (uncountable)

1. (fandom slang) The realm of professional writers, as opposed to fandom.
   • 1950 March, Rog Phillips, “The Club House”, in Amazing Stories, volume 24, number 3, page 186:

     You won't find a finer fanzine, nor one that will get you behind the scenes in fandom and prodom quicker.

• Jesse Sheidlower, editor (2001–2025), “prodom, n.”, in Historical Dictionary of Science Fiction.