I really dont know why actresses are dying to do this then they cry they are viewed in a particular manner! I mean in india (just for comparison of the spot), actresses even fought for such roles!
I mean if the movie is good you dont need naked women to bag in viewers and $$! Like many of Bollywood songs do well, the movie not necessarily or vice versa (very little to do with how many naked actresses you can put in!
Same for song videos! You dont need vulgarity if the singer has an awesome voice and lyrics! Like Coke studio and nescafe basement just shows you a studio in a basement like structure yet they get more likes and appreciation then women dancing with beggar like clothes!