This sadly is a bad idea, as it’ll get your entire store account banned (Steam, battle.net, etc). Chargebacks work great until the whole account matters.
Surely, taking escalatory retribution like that is illegal, somewhere...I hope...?
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Non-escalatory retribution would be banning you from the game you filed a chargeback for - I can't get mad over that.
But an online store doing unilateral revocation of access and licenses for a consumer's entire library (without refunding it 100%) in response to a single chargeback is just begging for countries' consumer protection agencies to come knocking, and even if that's a term in the store's EULA I can't see how they could be upheld by a court as an conscionable (and therefore legally enforcible) contract clause - especially given the dim-view to which online and click-through EULAs/TOS are viewed by most countries courts' today anyway.
Speaking as someone with too much time on my hands (thanks to a cushy job, I'm pleased to say, rather than funemployment) I secretely want to be dicked-over by a megacorp like this so I can get amusement (and a worthwhile life experience) by availing myself of the court system to hold these companies to account. Now I just need to find a similar way to make Microsoft undo the crappy shell in Windows 11.
Of course the reality of these other places being the marketplace and the service provider and the game publisher is a classic anti-trust issue.
Not saying "don't chargeback ever", and obviously in your scenario the SaaS is at fault, really.
Wait, does this mean that if someone hacks your Steam account, and uses your saved payment info to order a Steam Deck shipped to someone other than you, that you have to choose between losing your Steam account forever or losing the money?
and honestly who cares these days if their battle.net account is lost
(as long as you get some of your money back)