Today's rulings do not reflect a principled public interest analysis, nor is there any numerical limit to the percentage of advertising revenue share a single owner or a duopoly may possess. This approach is dangerously close to writing the public interest out of the statute.... In an era of nearly uncontrolled consolidation in the radio industry, this Commission's failure to adhere to the simple dictates of prior decisions produces results that are both structurally and functionally at odds with the Communications Act. If the Commission wishes to alter its approach, it should do so after notice and an opportunity to comment. Stealthy use of the Bureau's delegated authority subverts the principles upon which our prior cases, and indeed our government, are based.