<P> The case reached the U.S. Supreme Court in 1948 ; their verdict went against the movie studios , forcing all of them to divest themselves of their movie theater chains . This , coupled with the advent of television and the attendant drop in movie ticket sales , brought about a severe slump in the movie business , a slump that would not be reversed until 1972 , with the release of The Godfather , the first modern blockbuster . </P>
what year did the supreme court rule that the studios had to sell their studios
1948