Z:gnu-www-ja-free-world-notes--27f085-Microsoft's dominance is at le/en

Microsoft's dominance is at least partly due to the lack of any significant challengers. Apple and IBM used their operating systems to lock customers into their hardware, and would at any rate have been rejected by the rest of the PC industry, which at least with Microsoft got access to the same product. Unix vendors have stuck steadfastly to higher priced markets, avoiding direct competition, even though NT is aimed directly at destroying Unix. The longer Microsoft goes without serious competition, the harder it gets to mount any such competition.