Bhutan only removed its prohibition on television and the Internet in 1999.
Bhutan had no roads, automobiles, telephones, postal systems, or electricity until the 1970s for the same reason. The government only relaxed the ban on television and the Internet in 1999. The Bhutanese government did this to preserve its national identity. As a result, Bhutan has kept many of its customs and has remained a remote Himalayan country steeped in mystery.
Billy has also appeared in films other than Saw. Insidious, Dead Silence, and Death Sentence all featured him as an Easter egg.