Ballmer in Microsoft spotlight as Gates set to exit

By Daisuke Wakabayashi

SEATTLE (Reuters) - Bill Gates' retirement from Microsoft Corp (MSFT.O) later this week marks the end of an era for the software giant, thrusting CEO Steve Ballmer into the spotlight during one of the most challenging periods in the company's history.

The departure of Gates, who will remain the company's non- executive chairman, coincides with an escalating rivalry with Google Inc (GOOG.O) and other competitors who are using the Internet to chip away at Microsoft's software dominance.

With Gates taking a step back, the weight of Microsoft's future falls squarely on Ballmer's shoulders.

"Microsoft has to think about some radical changes within the organization to not just fix the online business, but start innovating in some of the other ones," said Sid Parakh, an analyst at McAdams Wright Ragen.

Recognizing the threat of new online rivals, Ballmer, who replaced Gates as the company's chief executive in 2000, made one of the boldest moves in Microsoft's history, with a $47.5 billion (24 billion pounds) bid to buy Web pioneer Yahoo Inc (YHOO.O).

The failure to clinch a deal has highlighted the company's shortcomings in its Web business and the urgency with which it needs to act or risk slipping farther behind Google in the growing and lucrative world of online advertising.

Analysts say Microsoft, which has grown from 30 employees in 1980, the year Ballmer joined the company, to almost 90,000 now, is not agile enough to keep up with rivals and its massive bureaucracy has stifled innovation.

"Microsoft just hasn't come up with anything all that innovative," said Andrew Loechl, director at Eagle Harbor Asset Management. "It's been buying up companies left and right for years, but it has not come up with anything internally."