Many Wall Street analysts thought that when Microsoft (NASDAQ: MSFT) lost its bid for Yahoo! (NASDAQ: YHOO) that it would take the $45 billion it was going to spend and buy other online companies.

Think again. Microsoft's management says it is not so. According to the FT, "Steve Ballmer, chief executive, scotched talk that Microsoft would turn to a `plan B' of other acquisitions to boost its online presence." Ballmer feels that buying more internet companies will not improve its share of the search market. He is not simply after more pageviews.

The news is probably disappointing to several large online companies. AOL, Facebook, Monster (NASDAQ: MNST), and Digg might all have been part of a Microsoft plan to improve the size of its presence on the web.

The Microsoft comments send another message. Search is important. Display advertising is not. Search is an efficient way to make money. Display advertising's best growth years are behind it.

If Ballmer is right, the online world is about to go through a major upheaval.

Douglas A. McIntyre is an editor at 247wallst.com.