You don't pay for a percentage of the month when you cancel. When you switch to three different services in one month you're paying for three different services

You don't pay for a percentage of the month when you cancel. When you switch to three different services in one month you're paying for three different services. And oftentimes --especially in the case of Disney-- the consumer has paid for the movie several times in several different formats. Meanwhile if a pirate downloads a digital copy he has it for life, with the ability to transfer it between devices and watch it after cancelling a service. Piracy is still a distribution problem.