Equipment seen as scarce is often removed from a location in which it is being put to good current use.  Forcing the original owner to interrupt his work to build or procure a replacement.  Simple power cables or communications cables are good examples of very inexpensive items that cause an inordinate amount of time to replace or re-make.  But more importantly cause interruption to the project's workflow.  Staplers and hole punchers are other examples.  A stapler should be within easy reach of everyone who needs it.  Several around the office. Not hundreds, some around the office but most hidden in private drawers.

Oscilloscopes, PCs, furniture are good examples of the more expensive items that make a real difference when hoarded.  A project may need only one oscilloscope that you can book from central stores as expediently required.  It will surely suffer unnecessary costs if it has to buy 10 all secreted in various places with the various teams.