I believe there was some skullduggery where M$ encouraged Wordperfect and Lotus, who dominated their markets, to focus on OS/2 as the future, while preparing to release or further promote Excel and Word for Windows with the release of Windows 3.0. (and possibly sabotaging the OS/2 effort). They also started the practice of bundling them up as "Office" which made Powerpoint a freebie, thus killing the market for presentation programs that had had competition at the time. I worked in an Egghead Software store while all this was going on.