Vaguely worded laws can also lead conservative corporate counsels to make decisions like geoblocking all of the EU
i.e. if signup is "email and credit card number" then you're going to be hard pressed to explain why a similar option to cancel does not exist and isn't accessible in as many clicks, with equivalent screen real-estate usage.
So you argue that to cancel a subscription, you should have to provide your credit card number again. If a check on the credit card fails for some obscure reason, you cannot cancel your subscription.
This is what "subscribe is as easy as unsubscribe" also means.
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