Amazon Prime is particularly heinous about using dark patterns to confound users into risking forgetting but ultimately you’ve already paid for the month, year
I can confirm this to also be the case with most streaming giants plus the less-giant Shutter
Edit: comments have pointed out some notable exceptions such as services through Apple and HP Instant Ink
Want to add in a potential extra as well… even if you DO find a service good and worth continuing to use, It’s a good idea to try and cancel it anyway. Why, because a lot have special automations to attempt to retain you by offering you deals.
“are you sure you want to leave, what if we gave you 3 months at half off?”.
this is what my grandfather would have to do almost yearly do get an affordable direct tv bill. The year he switched to fubo is the year that they stopped giving him the discount. He refused to pay 150$ a month for the three channels he watched
as is I still find it rediculous he’s paying 80$ a month for them now.