People don't cancel shit because they don't know it's charging, they don't cancel shit because businesses make it artificially hard to do so, oftentimes requiring you to connect with a representative over chat or phone and having them argue with you and try to re-sell you the product. Almost every subscription I have right now was started with a free trial with a few buttons, but canceling? Canceling is usually a 20+ minute task of sitting somewhere on a computer or on a phone (or worse, both) when it could be EXACTLY as many buttons.
And we know that, because Apple basically mandated it with App Store subscriptions. Cancelling subscriptions there takes seconds. And we also know that the various subscription companies absolutely hate it.
The one that specifically burns me to no end is I recall hearing from a friend that they were on the phone with a representative from one of those meditation apps trying to cancel their subscription, and just, your product literally is made for people who struggle with mental health issues and especially anxiety, and making that base of customers jump through social hoops of fire, and argue with another person and make them stand their ground on wanting to cancel, is a SUPREMELY CLASSLESS MOVE.