Microsoft to write program (a search engine)
Steve Balmer's biggest regret is watching anyone else get rich doing anything he could do better, and so now Microsoft plan to dominate in the searching world by inventing a second generation search tool. Google perhaps gave the world its first taste of useful search results and how that could make the web into something that formed a kind of importance or relevance heirachy. Simple effective concentration on an application and they were able to attract enough business with their adwords idea that they became a big fish.
Microsoft can compete effectively in the search arena, but the odor of gunpowder is snaking up the corridor. Do we see Microsoft take on a presidentially nasty campaign about how the "others" lead you into places you don't want your children to go... or something equally distilled, and present to you their packaged idea of what you should find? Yeah, right.
Microsoft's world view on anything is going to be very tainted by who is signed up to give them money, as it is with Google and Yahoo already. There is nothing wrong with the commodification of search results, having three good and reliable engines is better than two.
The regulators will probably try and stop Microsoft from dominating in this field. Good luck to them.