Together, EMI, SOny BMG Music Entertainment, Universal Music Group Recording, Inc., and Warner Music Group Corp. producted, licensed, and distributed 80 percent of the digital music sold in the U.S. The companies formed MusicNet to sell music to online services to sell the songs at the same price and subject to the same restrictions. Digitization of music became cheaper, but MusicNet did not change its prices. Did MusicNet violate the antitrust laws? why