For these keys, you need to apply for changing the number of MAK/KMS authentication limits and increase the number of authentications possible.
This act must be done by the contractor, and others cannot increase it with the leaked key like this.
It is not shown as Blocked and is Alive because it is not blocked by Microsoft and the key itself is valid if you increase the limit.
But if you don't increase the limit, it's a dead key.
Only those who are legally contracted can be revived.

great question...