Windows vista needed to have an inbuilt antivirus program. and it won't be anticompetitive because vista already comes with antispyware and a 2way firewall. I don't know why microsoft didn't include this.
\"In a fresh move yesterday the Washington-based Computer and Communications Industry Association - which represents firms such as Oracle, Sun Microsystems and AOL Time Warner - claimed Microsoft had bundled so many hi-tech products into the XP Windows package that rivals were unable to compete.
Windows XP takes Microsoft's abusive practices to a new level, illegally protecting Microsoft's existing monopolies and ... illegally eliminating competition in new software and service markets,\" the CCIA said.
The software is also biased towards Microsoft's products, it was claimed, making life difficult for competing products.
anti-trust... they already lost to netscape for integrating IE in win98 days. now they dont want mcafee and norton to run after them.plus UI wise IE was much better than netscape in those days so ppl liked it. but as u said their AV is not as good and it wud create negative impact on ppl abt vista if any virus passthru.