Why are people staying away from the movie theatre? Perhaps it’s the deluge of ads that now hit us before the show. “I’ve seen TV show ads in theaters before. But somehow the sheer absurdity of the idea didn’t really register until watching the “Loser” spot. Imagine being a studio executive sitting in a movie theater — the once-sacred palace where we saw glorious dreams in the dark — being exhorted to stay home next Tuesday night to watch “The Biggest Loser.” Wouldn’t you fear for your future?”