Daniel Ives, head of technology research at GBH Insights, said that a Comcast bid would be "game changing" and, if successful, would seriously harm Disney's plan to build and provide content for a rival streaming service to Netflix.
"Any offer for Fox would be all-cash and at a premium to the value of the current all-share offer from Disney", Comcast writes.
Disney reached a $52.4 billion deal in December to buy Fox's movie studio and regional sports networks, as well as cable channels FX and National Geographic. Fox's attempts to acquire full control of the company has long faced regulatory hurdles - hurdles that British regulators have signaled would not be faced by Comcast.
A potential transaction with either Disney or Comcast would not include the Fox News Channel, Fox Business Network, Fox Broadcasting Company and certain other assets.
The company also said its efforts to finance the bid and submit key regulatory filings is "well advanced", though no final decision has been made.
The biggest movies of the year have come from Disney and Fox, with "Black Panther", "Avengers: Infinity War" and "Deadpool 2", combining for about $1.5 billion in the U.S.so far.
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The package is called Rekognition and has been deployed in some capacity-including alpha and beta testing-since late 2016. Records released by the ACLU show Amazon provided free consulting to Orlando to establish the pilot program.
Rumours about Comcast's interests in Fox have circulated for weeks, but it is the first time it has confirmed its intentions. The Department of Justice has sued to block AT&T's $85 billion deal for Time Warner.
Experts say the firm would be unlikely to proceed with an offer for Fox until a judge rules on that case in June. While Comcast noted that nothing is finalized in the press release, this follows reports of it displacing the Disney deal.
However, Comcast formalized a bid for a majority stake last month as a challenge to Fox, leaving Sky's fate uncertain.
Comcast won approval on Monday from the United Kingdom government to move ahead with the offer for Sky.
"In addition, our directors, though, of course are aware of their fiduciary duties on behalf of all shareholders", he said.
"Comcast does seem intent on winning this one (and) rivalry can frequently drive prices to un-economic levels".