Netflix doesn’t have discount for holidays. They recently up the subscription price. My bet is the increase has to do with the holiday effect (more time at home), and the fact more collections are added. A good number of recent movies are available online (Amazon, YouTube, Netflix) as soon as they leave the box. Though the mote interesting graph would be views. During major sport events I can bet there is a big dip.

The family subscription is a bargain though.