[Terretta]

It's not to save costs on licensing. It's because those titles are going in and out of licensing 'windows' and Netflix isn't allowed to offer them.

[wahnfrieden]

Isn't the length of those windows determined by what Netflix is willing to pay? Or do the content owners restrict it?

[X-Istence]

Content owners restrict it, for example if a movie is about to be shown on television it will disappear from NetFlix's instant streaming service a week or two beforehand and re-appear a month or so afterwards.