Meebo, Picasa, Wave, Google Plus . . . All of these useful apps were killed by Google. Google has a fickle reputation. More often than not, they quickly kill struggling projects, rather than refine them.
Compare this to Microsoft. Excel, Word, Access, Internet Explorer, Windows Server, Windows itself — all were weak also-ran competitors to much stronger market leaders. Yet in each case Microsoft worked hard for years at improving its initially weak product until finally it kicked the king off its perch.
Google doesn’t seem to have Microsoft’s tenacity. Why? Maybe success came too quickly to Google. Pagerank and AdWords were instant succeses.
Which model will succeed? Don’t assume that Google will always be the search leader. Microsoft continues to refine Bing, and there’s a long trail of onetime market leaders — Novell, WordPerfect, Lotus, Netscape — lying dead in Microsoft’s wake.