  In the era of a growing population, systemic change of the world, and rising
risk of crises, humanity has been facing an unprecedented challenge of resource
scarcity. Confronting and addressing the issues concerning the scarce
resource's conservation, competition, and stimulation by grappling their
characters and adopting viable policy instruments calls the decision-makers'
attention to a paramount priority. In this paper, we develop the first general
decentralized cross-sector supply chain network model that captures the unique
features of the scarce resources under fiscal-monetary policies. We formulate
the model as a network equilibrium problem with finite-dimensional variational
inequality theories. We then characterize the network equilibrium with a set of
classic theoretical properties, as well as some novel properties (with
$\lambda_{min}$) that are new to the literature of network games application.
Lastly, we provide a series of illustrative examples, including a medical glove
supply chain, to showcase how our model can be used to investigate the efficacy
of the imposed policies in relieving the supply chain distress and stimulating
welfare. Our managerial insights encompass the industry profit and social
benefit vis-\`a-vis the resource availability and policy instrument design.
