Try to cancel your newspaper subscription - you have to call in and jump through hoops.
Try to cancel your cable or internet, you didn't realize the rate you got was a "promo" rate that required a two year contract?
I guarantee that if apple used the approaches others use, subscription revenue would be a LOT higher.
They send you an email saying, here's what will be renewing soon, click here to cancel. I end up canceling about 80% of what would auto renew.
And I hate the developers who are not upfront with the subscription price. If there is a free trial, what does it cost after. Even NY Times did this ($1/month in big print - fine print said something like $54/month after 1 month or maybe it was just in a link burried etc).