Reasonable expectation of account life time is the period when the user needs it, no more and no less, and it is not the same period as the life of the user.
As pointed out above, you are allowed to keep all data necessary to provide your customer what they purchased. Losing that data is not the customer's problem, but yours. If you cannot keep your customer data safe indefinitely, then maybe you should've settled on a business model that does not require keeping customer data indefinitely.
Passwords should be properly hashed. Heck, just delete the password and let the user ask for another if need be.
If there is ANY unnecessary data that was collected but that doesn’t need to be there, or that needs consent to be stored, just delete it. Easy peasy.
List of games owned? Email address? That doesn’t need consent, because it’s legitimate interest. It is 100% in the customer’s interest to have this information long term, and deleting it would cause actual loss to the customer that’s probably as bad as having PII leak.
What “cost of maintaining accounts”? Less than a kb of data per customer on average?
This whole thing is just to force customers to re-purchase games.
> In real world nearly everything has an expiry date, beyond which product is no longer usable
That’s clearly not true. There are several products that don’t have it.
But in the case of games it is worse, because the expiration date is 100% artificial: since the games need authorization servers to run.
In real world nearly everything has an expiry date, beyond which product is no longer usable if you do not invest in maintenance. Who said that in digital world it should be different?