The commission agreed with American Business Media and McGraw-Hill Cos. that the existing structure is not unlawful but said it could be improved.
McGraw-Hill and ABM presented testimony from Crain Communications Inc., publisher of BtoB; Hanley Wood; McGraw-Hill; and VNU to support their position.
The companies contended that had the complaint gone through, it would have had a substantially adverse impact on small publications.
Gordon Hughes, ABM president-CEO, hailed the decision in a statement.
The complaint was filed in January 2004.