Wall Street and the banking industry awoke Wednesday to a more  competitive world with the birth of a new financial services behemoth. 
Travelers Group announced a $9 billion deal for Salomon Inc., capping a  week of takeover speculation that had previously focused on Bankers Trust   New York Corp. and J.P. Morgan & Co.   
  
The deal would bring together Travelers' Smith Barney Holdings Inc.-the  nation's second-largest retail brokerage-and Salomon Brothers, one of Wall   Street's older investment banks.   
Observers said the deal, coming on the heels of the Morgan Stanley-Dean  Witter merger in June, marks the emergence of a new model for financial   services companies. And that raises the stakes for commercial banks.   
  
"It's the first step toward really completing the financial  supermarket," said Linda Chase, a consultant with New York-based Towers   Perrin. "Banks can't possibly compete" with such a broad-based rival "if   that's the way the industry is heading," she said.     
The deal, which is slated to close by yearend, was the buzz of the  financial services industry Wednesday. In recent months, insurance   companies, brokerage firms, and commercial and investment banks have been   pairing off in hitherto unseen combinations. The vision of a truly   integrated financial services industry-which has gone in and out of fashion   before-is clearly back in vogue.         
But observers said the new wave of mergers will have to play out for  some time before it is clear which combinations work. 
  
"If one follows the trends over the last 50 years, there will be some  spectacular successes with a few embarrassing failures," said Richard   Hartnack, vice chairman of Union Bank of California, Los Angeles, a   subsidiary of Bank of Tokyo-Mitsubishi Ltd.     
He pointed to the collapse of Sears Roebuck's much-vaunted acquisition  of Dean Witter in 1981. "Stocks and socks" seemed like a great idea, Mr.   Hartnack said. "Bankers were quaking in their boots, and a couple of years   later it had to be unwound." Sears sold Dean Witter in 19tk.     
Although the Smith Barney brokerage is a prominent part of Travelers,  the company's roots are in the insurance business. It recently expanded its   huge property and casualty operation by buying a major unit of Aetna.   
The Travelers-Salomon merger raises no novel policy questions; insurance  companies have bought securities firms before. But it is sure to attract   attention in Congress, where lawmakers have struggled for years to enact   financial reform.     
  
"It sends yet another message that different parts of the financial  industry are consolidating," said John C. Dugan, a former Treasury   Department lobbyist who is a partner in the Covington & Burling law firm.   "It is creating a different marketplace that sooner or later Congress is   going to have to respond to."       
"This is more evidence from the real world that we need action on  financial modernization," said Rep. Marge Roukema, R-N.J., chairwoman of   House Banking's financial institutions subcommittee.   
"We can't be standing here and letting the financial services industry  grow out of control without statutory requirements that define how mergers   take place and what consumer protections are necessary and that ensure   safety and soundness," Rep. Roukema said.     
But others said they don't expect financial services firms to wait for  Congress to decide how to shape the industry. 
Travelers' deal for Salomon "is just a perfect example of consolidation,  and it will be a catalyst for banks to step up to the plate," said a hedge   fund manager, who asked not to be identified.