I am going to have to guess that almost all film use is from hobbyists like us. Film is VERY hard to find in the stores (except for Fuji Instax). You have to plan well ahead to have a supply of film. You wont find it on location unless you are seriously lucky.

Digital cameras, on the other hand, are EVERYWHERE. I mean EVERYWHERE. Also, Chinese are rabid smart phone users so they have cameras that way as well.