I don't mean exactly the same, but in terms of general innovation. There were decent, good, and great alternatives to ALL of their key products: PC GUI's, spreadsheets, word-processors, desktop databases, etc. Heck, they purchased most of them from other co's. Granted, MS usually charged less, at least initially, but that's because they took an up-front loss in that product to gain market-share. But then stagnated once they killed competition. I know an obvious MS-Access bug not fixed for 15 years.