A few moments ago I saw an episode of 'The Blacklist' and recognized a sign with the address of an fictitious estate agent. My curiosity was to check the domain in the web browser. It seems that the domain has not been used so far, but the record of the WHOIS system (which allows you to get information about the owner) showed that this domain is associated with Sony Pictures. Furthermore the agent/company was not very relevant for the story.
So why should somebody buy such an irrelevant domain and not use it?