Z:gnu-www-ja-free-world-notes--365cb1-The main point, however, is th/en

The main point, however, is that under current circumstances no sane investor will directly challenge Microsoft. The cases in other industries where challenges are made to dominant companies depend on the discovery of some significant cost advantage (e.g., MCI's challenge to AT&amp;T), but cost advantages are essentially impossible in software, unless you're willing to forego all your margin, a position no investor will take.