It's impossible to generalize big-cap tech stocks. Each company faces unique opportunities and problems. A breakup of Microsoft wouldn't be the end of the company, as the parts would likely emerge as strong companies of their own. The trial is a serious management distraction, though.
Cisco is also at risk of a telecom spending slowdown.
Lucent is plagued with serious management problems. Since they're diversified in a wide swath of technology and markets, a downturn in one area isn't the end of the world. For instance, Microsoft makes software that runs both consumer desktop PCs and back-office business servers. That protects the investor somewhat from a blowup in consumer confidence. But some argue that with the reduced risk comes reduced upside.