The movie industry situation in that 1:5 world would actually be interesting to analyse. The female audience is obviously a whole lot bigger than the male audience, so more movies targetting women's interests would be made (the money is there), also taking into account there would be a whole lot more female movie producers and directors. On the other hand, since women in that world would go a long way to try to woo a man, as opposed to what happened in this chapter, most couples ought to be watching movies that happen to interest the man more. But it's not like all moviegoers are on a date.
All that being said, there actually aren't as huge differences between what sort of movies men and women like as one might haphazardly imagine. It's not like women wouldn't be watching action movies and men would avoid all drama movies. Such a trend doesn't exist. That is, in our world. In that 1:5 world the differences likely are much bigger. In the end, in that world there's a huge pool of women starving for romance due to the lack of men.