Why do some Centers limit discounts to specific accounts?

Some Centers prefer to regulate more tightly what research gets their discount, so as
to ensure that they are funding Center-appropriate research. The DRTC, for example,
specifies the eligible account numbers as part of the membership application process.

The Core's discount system is set up to allow participating Centers a variety of
ways to regulate their allocations. Centers can grant blanket permission to a PI,
and entrust them with choosing the relevent accounts or samples, or they can grant
discounts only to specific account numbers (e.g. specific federal grants). Centers
can also 'cap' the usage of their grants to more equitably allocate the resources
among participants.