There is nowhere else anymore that you switch off for two or three hours where it is socially unacceptable to be on your phone. For a brand to have this environment, with the huge sound, the huge screen, plunged into darkness, captive audience, people who have paid and opted in to choose a film. We know that 24 seconds out of the 30 second ad is viewed. On social, 1.3 seconds is the average view for a brand.
Turner leads with the attention argument. The structural superiority of cinema attention metrics is the commercial foundation of the medium.