Harlan F. Stone,
United States v. Trenton Potteries Company…
“ The aim and result of every price-fixing agreement, if effective, is the elimination of one form of competition. The power to fix prices, whether reasonably exercised or not, involves power to control the market and to fix arbitrary and unreasonable prices. The reasonable price fixed today may through economic and business changes become the unreasonable price of to-morrow. Once established, it may be maintained unchanged because of the absence of competition secured by the agreement for a price reasonable when fixed. ”
