The .gov agencies are bulk buying because of price. The orders are not for 100K at one time, but spread out over the time of the contract. The feds do it every few years, you know bulk buying in order to secure a better price.
They also like, school districts and city transportation dept.s bulk bid on fuel to lock in a price that guarantees X price spread out over 1 year. No one complains or gets a case of the noids when denver buys 1 million gallons of fuel.