Her list of sources for funding show how imaginative planning can help with funding. Certainly putting all of one's eggs in on basket can be a serious risk, especially if that revenue source begins to dry up or not keep pace with needs. In areas where there are population shifts away from a particular geographic area, the impact on funding can be devastating.
Law schools are either public or private.
Tuition can only go so high. Technology is competing with the print world. Deans are frequently asked to cut costs and they most likely turn to the library first. I have no doubt that academic law libraries will increasingly feel pressure to reduce costs or, alternatively, raise funds from other sources. We've seen in this discussion how fees can possibly supplement the library budget.