Database capacity will increase due to solution updates. Even if it is small per instance, if it gradually increases with multiple instances, the capacity of the entire tenant may be tight.
I understand that there are efforts to optimize and mitigate the data, but it is not be offset.
Customers make estimates and purchase capacity, so it's not easy to purchase since it unintentionally increase data capacity.
At the very least, it would be nice to know in advance how much it will increase.
It is desirable to be able to manage the database capacity that is not customer's data separately.