Starz builds its case against AT&T-Time Warner deal

Mary Altaffer / AP

Some of the antitrust concerns associated with the merger of AT&T and Time Warner are about premium cable, thanks to Time Warner's ownership of HBO. A new white paper commissioned by competitor Starz for the Department of Justice lays out the case for how the deal could hit its business hard.

AT&T's response: "This conclusion doesn't square with the facts," said a spokesperson in an email. "We fully expect the DoJ to base its analysis on the facts and the law, as it always does, and not the work of HBO's competitors."