Most analysts will probably say, "think of the combined power!"
I'd say: Think of the combined inertia.
To further abuse the analogy, it's like two huge masses colliding so now you need twice the escape velocity. We may never see another product launch from either company.
"Microsoft and Yahoo in recent months discussed a possible merger of the two companies or some kind of match-up that would pair their respective strengths, say people familiar with the situation. But the merger discussions are no longer active, these people say. The two companies may still explore other ways of cooperating."
Startups are screwed? A MS/Yahoo combination is a play by MS to get immediate marketshare in search and other major online services so that it can allow it's MSN monetization engine to compete.
Startups shouldn't be looking to compete with the core businesses of Google and MS/Yahoo. They should (I think):
1. Invent a new service
2. Improve a service that sucks
I doubt PG funded anyone who claims they can build a better search engine.
There are some thing big companies can do and other things they can't (i.e. Justin.TV).
If MS buys Yahoo, the internet loses a lot of useful applications (as obviously the Yahoo stuff won't be usable anymore in the long run). Hence more opportunities for startups, I would think?
Look how well the google/dodgeball, the overture/yahoo, and now flickr/yahoo did. now think how ms/yahoo will do. big, fat, fat, fat, giant. fat, fat, fat...
Big companies may be slow, but some of them have significant startup-smooshing power. Presumably, the fear is that the MS-Yahoo conglomerate would attempt to smoosh startups by, say, making everything Yahoo work only with things MS, and generally promoting lock-in and anti-open anti-internet-stuff. It might not work, but when such large objects are in play it seems reasonable to worry.
If a software giant buys an Internet company, then an Internet giant should buy a software house. This translates to "Google is eyeing Adobe". Just my 2 eurocents :)
http://paul.kedrosky.com/archives/2007/05/04/microsoft_yahoo.html