> Is there evidence that European courts have sided with that?

Is there evidence of the contrary? Maybe any store can just delete your personal data right after charging your card and claim GDPR prevents them from shipping your product.

Silly arguments work both ways. You just picked the one that confirms your bias.

GDPR under no circumstances forces processors to delete everything, it defines legitimate interest. Retaining a person's purchases is as legitimate as it gets so the data can be retained for as long as the purchase is valid. And the license itself isn't even the user's personal data, it's just a license, so Sony could give the option to export that license to be used later - even in a cryptographically secure format that can only work if e.g. the account is created with the same email address. If they delete the personal data and throw out the baby with the water, it's not GDPR forcing them to do it.