In an aggressive post from the Official Google Blog, David Drummond argued earlier this month that "Microsoft's hostile bid for Yahoo! raises troubling questions. (...) Could Microsoft now attempt to exert the same sort of inappropriate and illegal influence over the Internet that it did with the PC? While the Internet rewards competitive innovation, Microsoft has frequently sought to establish proprietary monopolies -- and then leverage its dominance into new, adjacent markets."
Apparently, these ideas are shared by Google's co-founder Sergey Brin, who declared in an interview that Microsoft's bid is not welcome for the Internet. "The Internet has evolved from open standards, having a diversity of companies. And when you start to have companies that control the operating system, control the browsers, they really tie up the top Web sites, and can be used to manipulate stuff in various ways. I think that's unnerving." According to WordNet, "unnerving" means "formidable, redoubtable, inspiring fear", so probably the word means "worrisome" in the context.
In the past years, Google was upset that Microsoft decided to make Live Search the default search provider in IE7 and Windows Vista didn't provide a way to integrate third-party desktop search tools like Google Desktop in the operating system. Microsoft will certainly try to increase its online presence by leveraging its software + services strategy and by making it easy to access its online services from applications that are presented as upgrades, but we should not forget that Google also uses its homepage to promote services and bundles its toolbar with popular applications.