That's completely different. Requiring a credit card to sign up for a "free" service and they starting to bill the card after x months without warning or remind

That's completely different. Requiring a credit card to sign up for a "free" service and they starting to bill the card after x months without warning or reminder is both scammy and scummy. But after I've decided to pay for a service, it's not up to you to decide that I need to be reminded to use the service. I'm an adult, I can take care of that all on my own, thank you.