Microsoft released Microsoft Windows version 3.0 with its own memory management and multitasking features. While DESQview was far faster, smaller, and more stable, it was more expensive and didn't include support for the graphical features of MS Windows. Microsoft exerted considerable pressure on ISVs (independent software vendors) to release GUI software for Windows and hardware wholesalers (among others) to bundle MS Windows with MS-DOS on all systems that they sold (providing a broader market for the applications developed by the ISVs).
