Federal regulators warn that combining rivals Sirius Satellite and XM Satellite Radio will be a tough process, since there's already a provision barring the satellite radio licenses from being owned by the same company.
Sirius Satellite Radio and XM Satellite Radio Holdings announced an agreement to combine on Monday.
The Federal Communications Commission will evaluate any proposed transaction to see if it's in the public interest, FCC Chairman Kevin Martin said following the announcement.
"The hurdle here, however, would be high as the commission originally prohibited one company from holding the only two satellite radio licenses," Martin added. "The companies would need to demonstrate that consumers would clearly be better off with both more choice and affordable prices."
That's something that XM Satellite Chairman Gary Parsons believes the companies can do: "Clearly, you would never enter into this unless you had a reasonable degree of confidence that you would in fact get the approvals," Parsons told CNBC'c David Faber.
XM and Sirius have racked up significant financial losses to subsidize new subscribers even as they escalated an arms race to lock in long-term programming deals. Sirius signed a five-year, $500 million deal in 2004 with the shock jock Howard Stern, while XM paid $650 million for an 11-year deal with Major League Baseball. XM signed a three-year, $55 million deal with Oprah Winfrey.
A major rationale for combining the two companies would be to save costs. Wall Street analysts have published estimates putting cost savings in the range of $3 billion to $7 billion, the companies said.
, the CEO of Sirius who will become CEO of the new company, declined to comment in an interview about how much the companies hoped to save by the merger. He said he was optimistic about achieving regulatory approval, but acknowledged: "We understand that there's a lot of work to be done."
Investors and analysts have been speculating about a deal for months, and are hoping that the cost savings that would result would give the companies a boost amid softening retail demand. Both services offer dozens of channels of talk and commercial-free music for monthly fees of about $13.
XM radio receivers can't receive signals from Sirius, and vice versa. But Karmazin and Parsons said in an interview that the companies are working on developing a receiver that could receive both signals.
In the meantime, they said, assuming the deal goes through, the companies would make other arrangements to bring programming that's currently exclusive to one provider to listeners of the other, such as getting Major League Baseball games -- currently only available on XM -- to Sirius listeners.
The companies billed the deal as a merger of equals, with shareholders of both companies owning approximately 50% of the combined company. However, Karmazin will run the combined company and XM's CEO will stay on only until the deal is closed. XM Chairman Gary Parsons will remain in that role.
XM shareholders will receive 4.6 shares of Sirius stock for every share they own, valuing the company at $4.57 billion or $17.02 a share based on Friday's closing price for Sirius shares.
That gives XM shareholders a premium of 22% to the $13.98 closing value of their stock on Friday. Markets were closed Monday for the Presidents' Day holiday.
Regulatory Approval Needed
A combination would also have to meet antitrust approval from the Department of Justice. The companies are expected to argue that they compete not only with each other but also with traditional radio and a growing base of digital audio sources such as iPods, mobile phones and non-satellite digital radio.
It's too early to say what the deal might mean for subscription prices. The merger could bring down the cost of providing service, but at the same time give the company more pricing power as the only U.S. satellite radio provider.
Neither XM nor Sirius have reported a profit yet. Both stocks declined more than 40% last year on concerns about their continued growth in subscribers, but investors have held out hope of a merger.
The combined company would have had about $1.5 billion in revenues in 2006 and about 14 million subscribers, they said. The companies said they would work together to decide on a new name and also to determine where it would be based. XM is based in Washington, while Sirius is based in New York.
The new company's board will have 12 members, including Parsons, Karmazin, four independent directors named by each company, and one representative each from General Motors and Honda Motor.
News of a possible merger was reported earlier Monday by the New York Post.
On Friday, a Bear Stearns analyst said in a research note that a merger would have a good chance of overcoming regulatory obstacles. Other analysts remain less sure. Sanford C. Bernstein analyst Craig Moffett said he gives the deal a '50-50' chance of passing regulatory muster.
Moffett said the deal could have a particularly tough time getting through the FCC, and said it was "anyone's guess" as to whether the FCC would change its rule barring a consolidation of the two satellite radio companies.
A group representing radio companies, the National Association of Broadcasters, put out a statement Monday urging federal regulators to block the satellite radio deal.