minated in the filing of complaints against seven soft drink syrup companies. See Note, supra, at 108.
During the pendency of those actions, the Supreme Court overruled the Schwinn decision in Continental T.V., Inc. v. GTE Sylvania Inc., 433 U.S. 36, 97 S.Ct. 2549, 53 L.Ed.2d 568 (1977). In Sylvania, the Court held that the law should “return to the rule of reason that governed vertical restrictions prior to Schwinn.” Id. at 59, 97 S.Ct. at 2562. In 1978, relying in part on Sylvania, the FTC ruled that certain territorial restrictions existing in the soft drink industry were unlawful. Coca Cola Co., 91 F.T.C. 517 (1978), 642 F.2d 1387 (D.C.Cir.1981) (remanding for dismissal); PepsiCo, Inc., 91 F.T.C. 680 (1978), 642 F.2d 1387 (D.C.Cir.1981) (same). Those decisions were the primary stimuli to the enactment of the Soft Drink Act in 1980. See H.R.Rep. No. 1118, 96th Cong., 2d Sess. 6, reprinted in 1980 U.S. Code Cong. & Admin. News 2373, 2375; Note, supra, at 106.
The Soft Drink Act was adopted after Congress conducted an intensive investigation into the soft drink industry. In passing the Act, Congress determined that the exclusive territorial distribution agreements common to the soft drink industry warranted protection because that industry was a prototype of industries in which territorial restraints foster interbrand competition. See H.Rep. No. 1118, reprinted in 1980 U.S. Code Cong. & Admin. News at 2377. Such restraints encourage each bottler to invest and promote in his own territory, and prevent “free riding” by sellers from outside the territory on the bottler’s investment and effort. As described in the Senate Report accompanying the Act:
Under the trademark licensing system which exists in the soft drink industry, the franchise company produces and sells syrups or flavoring concentrates pursuant to trademark licensing agreements with independent bottlers, participates in advertising and promotional expenditures made in connection with the trademarked products, provides advice and technical assistance on production, quality control, management, and sales problems, and assists in development and test marketing of new products and containers.
The bottler, in turn, manufactures, distributes and sells the trademarked products and provides the capital investment necessary for his market. He determines the plant and equipment to be used, the volume of production by size and type of container, the product mix, the wholesale price to be charged, and the manner in which he can maximize his market penetration to secure the widest possible distribution of his products throughout the territory.
S.Rep. No. 645, 96th Cong., 2d Sess. 3 (1980).
Congress considered what would happen if the long-standing practice of territorial exclusivity was eradicated:
If territories are eliminated, wholesale prices for non-returnable packages may fall temporarily for large volume accounts, principally chain stores. However, it is the committee’s opinion that it is unlikely that chain stores will pass on these reduced prices to their customers because their past practice has been to maintain a retail price differential between their own private label soft drinks and the franchised brands. Moreover, it is clear that prices in non-chain stores, which account for 55-60 percent of sales, would rise and the cheaper returnable bottles would be more difficult to find.
Id. at 9. From these findings, Congress concluded that “the public policy stated in the antitrust laws would be better served by retention of the existing, competitive structure of the soft drink industry under the standards of this bill.” Id.
III.
Having examined the statute at issue, we turn to the questions presented. At the outset, we must address a threshold issue. Pennsylvania alleges that the district court erred in concluding that the Soft Drink Act applied to defendants’ conduct without first making factual findings on the existence of substantial and effective competition in the relevant market. In the district court,