While this was all with the same company, most microcomputer houses failed the transition to DOS, and the DOS powerhouses failed the transition to 32 bit machines.
Microsoft has since made another transition to the internet, one that many failed at.
They did make a successful transition to Applications though, at a time when Lotus 1-2-3 was making a killing and Lotus was the biggest personal computer software company.
The cloud transformation too is likewise big, quite possibly securing Microsoft the company for the long run, but Gates is not involved in day to day any more for MSFT.
Word had the advantage of the move to Windows and WYSIWYG - WordPerfect for Windows (and WP6 for DOS in WYSIWYG mode) meant nearly as big a change as moving to Word did, so n o loss there. The Excel crew had gone way out of their way to make everything 1-2-3 compatible. And Access was less wacky than Paradox, so the dBase croud didn't miss Borland all that much. None of the Office apps were, by themselves, at the top of the game at the time, but they were all good enough... and they worked and felt as if they were all of a piece.