I have trouble understanding the subscription model. Let's take S1, for example. Customers pay 9.99 to rent one movie per month, right? But then in the table, it says the average monthly rental per customer for S1 is 6. How do they rent 6 movies per month if their subscription only allows for one? Do they buy the subscription 6 times per month? But then surely we would have much higher revenue?
In the video case solution, the candidate also talks about restricting monthly orders to make the customers profitable (everyone with 6+ rentals is unprofitable) but under the three subscriptions that are detailed in the question, how does anyone receive more than 3 movies?
I'm looking forward to your insights!