I treat Netflix/Primevideo/Hulu & friends like this. It takes a bit of thinking but I usually have only one subscription at a time and cancel as soon as I close in on the end of whatever show I'm watching, then re-subscribe to whatever I need to. Some services (not necessarily the streaming ones) allow you to re-trial after a few months (love that), others will cut your subscription fee if you try to leave after a few months. So try to leave after a month or so anyway, even if you don't want to, then take the better offer.