How do these "bus movies" make money?

Posted by Careful-Swimmer-2658@reddit | AskUK | View on Reddit | 12 comments

London buses often advertise films that I've never seen anywhere else in the country or on TV or Netflix etc. They're usually a low budget thing that back in the day would have been "straight to VHS". Who's watching them? How do they make their production cost back? Are they some sort of tax scam?