WASHINGTON (Reuters) - The U.S. Justice Department and AT&T Inc on Friday presented starkly different futures for online video if the wireless and pay-TV giant is allowed to buy Time Warner Inc, as they laid out their cases for a blockbuster antitrust trial.

Signage that reads Time Warner is seen at the Time Warner Center in New York City, U.S. on October 23, 2016. REUTERS/Stephanie Keith/File Photo

The judge’s decision is crucial to the future of both companies and will likely determine how aggressive Republican-controlled antitrust regulators will be in coming years. U.S. President Donald Trump opposes the deal, and critics want to know if Trump’s antipathy for Time Warner’s CNN news network influenced regulators.

In their final briefs before the trial opens on March 19, the two sides disagreed on whether the $85 billion deal would harm rivals in pay television or online video and sparred over whether consumers would pay more because of the planned merger.

The Justice Department filed a lawsuit in November to stop AT&T, which owns DirecTV and other products with 25 million subscribers, from buying movie and TV show maker Time Warner, which owns HBO and CNN, among many other channels.

It argued the deal would mean higher prices for rival cable and online video distributors and for consumers.

Investors and company executives had been expecting more leeway in mergers with a Republican administration that vowed to reduce government regulation. The outcome of the case could affect other pending vertical mergers, in which different parts of a supply chain, rather than rivals in the same business, join together. Health insurer Cigna Corp wants to buy pharmacy benefits manager Express Scripts Holding Co and CVS Health Corp wants to acquire health insurer Aetna Inc.

“If the Justice Department loses to AT&T in court this will substantially raise the barriers to the Justice Department bringing another vertical challenge such as with respect to CVS/Aetna or Cigna/Express Scripts,” said Seth Bloom, a veteran of the Justice Department now in private practice.

An AT&T logo is pictured in Pasadena, California, U.S., January 24, 2018. REUTERS/Mario Anzuoni


The Justice Department used economic modeling to show that consumers will pay their pay TV provider more for Turner Broadcasting content, if U.S. District Judge Richard Leon allows the deal.

“The acquisition would give AT&T a new tool to slow down the development and growth of disruptive online competitors in the future,” the department added in its brief. “AT&T can profess it wants to lead the charge to the future, but its internal documents reveal a less attractive reality.”

For its part, AT&T said the merger would result in “more than $2.5 billion in annual synergies by 2020 and more than $25 billion in total synergies on a net present value basis.”

AT&T and Time Warner said prices would not rise because the company would compete with newer media companies

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