Do I need to purchase movies on Apple TV?

You do not necessarily need to purchase movies on Apple TV, as it also offers the option to rent movies, in addition to having its own streaming service—Apple TV+—which provides a collection of original content and other licensed shows and films for a monthly subscription fee. Furthermore, Apple TV is a platform that aggregates content from various other streaming services such as Netflix, Hulu, Amazon Prime Video, and others, so purchasing movies is just one of many ways you can enjoy content on the device. You have several options based on your viewing preferences and willingness to own digital copies of films or access them through various subscription services.