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
(..) He asked me if I was married. - I saw a gun in his hand. - Where was the girl? The what? What? The prostitute. Where was she? Someone comes to your establishment... they want to go downstairs, get some oo-la-la. Whatever. They got to come to you. Yeah? Yeah. You didn't see anyone? (..)1995 Se7en