Media giants pursue strategies of owning clusters of newspapers, radio, and television stations in the same market to increase potential revenue. The FCC raised the limits of the audience any single
company may reach from 35 to 45 percent, but Congress dropped the percentage back to 39 as a compromise; however, the percentages are not enforced.
Clear Channel Communications Inc., owned 173 radio stations in 1997. In 2004 Clear Channel owns 1,207 radio stations or 1,400 worldwide.