No, you're just wrong here. Merchant doesn't let me cancel will almost always be won by the vendor when they demonstrate that they do allow cancellations within the bounds of the law and contracts. I've won many of these in the EU, too (we actually never lost a dispute for non-compliance with card network rules, because we were _very_ compliant).
I can only assume you are from the US and are assuming your experience will generalise, but it simply does not. Like night and day. Most EU residents who try using chargebacks for illegitimate dispute resolution learn these lessons quickly, as there are far more card cancellations for "friendly fraud" than merchant account closures for excessive chargebacks in the EU - the polar opposite of the US.
And have you won one of these cases in a scenario where the merchant website has a blanket IP ban? That seems very different from cardholders incapable of clicking an “unsubscribe” button they have access to.
I can only assume you are from the US and are assuming your experience will generalise, but it simply does not. Like night and day. Most EU residents who try using chargebacks for illegitimate dispute resolution learn these lessons quickly, as there are far more card cancellations for "friendly fraud" than merchant account closures for excessive chargebacks in the EU - the polar opposite of the US.