Interesting insight into Microsoft's strategy in the earlier days.

Lotus’s spreadsheet software 1-2-3 was a good product in the 1980s and early 1990s; consequently Microsoft Excel, which debuted in 1985, became the standout of Microsoft’s nascent Office suite. Word processors like WordPerfect and WordStar were less formidable; as a result, Microsoft Word was considerably less stellar than Excel. And in the absence of any dominant email programs, Microsoft Outlook was buggy and slow, and remained that way well into the early 2000s. Microsoft was far too efficient to waste time improving a project beyond what was needed to defeat their competitors. In the late ’90s I got a chance to tour the legendary Massachusetts computer company Digital Equipment Corporation (DEC, later bought by Compaq), and the difference in culture was remarkable. There were people at DEC who had been working on threading (the manner in which operating systems manage concurrent sets of linear processor instructions) for twenty years. Half the people had PhDs in their areas of specialty. Corners were never cut to release something earlier.