premise: In composite trading Friday on the New York Stock Exchange, BellSouth shares fell 87.5 cents to $52.125.
  In national over-the-counter trading, LIN shares soared $4.625 to closed at $112.625, while McCaw fell $2.50 a share to $37.75.
  The proposed BellSouth-LIN cellular company, including the newly acquired Metromedia stake, would give the new entity 55 million potential customers, including about 35 million in the nation's top 10 markets.
  Mr. Leon of Bear Stearns speculated that McCaw, in an attempt to buy time, might consider filing an antitrust suit against BellSouth with the Justice Department and U.S. District Judge Harold Greene, who oversees enforcement of the consent decree that broke up the Bell system in 1984.
  Indeed, McCaw seemed to hint at that option in a brief statement. Urging LIN directors to conduct "a fair auction on a level playing field," McCaw asked how well the public interest would be served "with the Bell operating companies controlling over 94% of all cellular {potential customers} in the nation's top 10 markets."
  
   What will help give the company 55 million potential customers?
hypothesis: the newly acquired Metromedia stake