If a company does something sketchy and you cancel or reverse the charges, you generally lose everything on the account - not just the thing you're disputing.

Adobe is similar to Steam in that a single account is likely to have a variety of different products associated with it. If you somehow end up in a dispute involving Steam and reverse a charge, Valve will (IIRC) close out your entire account.

The card industry imposes a lot of regulation on merchants in the name of security (e.g. PCI) and customer experience (e.g. not allowing merchants to demand secondary ID for in-person transactions). Retaliation fraud by subscription merchants is something the card industry could stop and the industry should not be let off the hook for allowing this practice.

Neither, for that matter, should governments be given a free pass. Consumer dispute resolution processes exist for a reason (in no small part to reduce the load on the legal system) and circumventing them should not be tolerated.