You may have the physical product, but if the vendor fails to provide the service that was to come with that product at time of payment... they are still not delivering the thing you paid for...
The charge back is not for not getting the product... it's for not getting the product you were sold and what you paid for. Never suggested saying it was a fraudulent transaction and that it wasn't you doing the transaction. That would be fraud on your part. Holding the vendor accountable for their failure to provide what you paid for is holding them accountable for their fraud. Bait and switch is fraud... they can feel better by changing the terms on their end and thinking it's all okay... but that's not how it works.
Working at time of sale is also not the same. I can buy a 1 year subscription to a service... if the vendor stops providing that service after 6 months (although they were paid for 12) and refuse to refund me the money... you better believe it... i am getting that money back... The vendor failed to provide the service/product paid for... Charge backs are not just to remove the risk of fraud from impacting you when someone makes a fraudulent purchase using your card, but to also hold bad vendors accountable when they take money for something they don't deliver on. For the sellers to be able to be paid by Visa, Amex, MC, etc..... they sign a contract with the payment processor/CC network that stipulates their code of conduct, and prohibits bait and switch schemes.
People using their credit cards depends on an eco system of retailers that people can trust. The charge back mechanism helps protect the users when the vendors fail to fix the issue, and to establish that safe eco system. Bad vendors are punished. The credit card company will do their investigation, and in this case, not sure how they would side with the vendor when the service they are providing is not what the card holder paid for.
*there is a 90/120 day cut off depending the the card company, but it is usually for fraudulent transaction disputes... for subscriptions or ongoing services... the terms are usually for duration of and not the usual 90/120 day cut off...
It depends on the credit card company and their policies/investigation. But if you attempt to fix the issue with the vendor, and they fail to resolve it after they pull this bait and switch BS... Charge back would be the mechanism to try before doing a class action lawsuit.
Can't stress this enough... not suggesting lying and doing it in bad faith.