He accepted a boring job and became a member of 'the Establishment'.
His novels were disliked by 'the' literary 'establishment'.
the 'establishment' of a business/school/church/settlement
(..) - Morning, Mr. President. Could you get the speaker on the phone? Right away, sir. Have you and the missus zeroed in on a dining establishment? When have you known the missus to zero in on anything? Fair point, sir. Martin, I wanna shake your hand. - We're all sorry to see you go. (..)2013 White House Down