The final nail in the OS/2 coffin was trying to find driver support for your hardware. The nails before that were lack of OS/2 native apps, since OS/2 could ru

The final nail in the OS/2 coffin was trying to find driver support for your hardware. The nails before that were lack of OS/2 native apps, since OS/2 could run DOS and 16 bit Windows software, companies didn't bother writing OS/2 native software anymore since they could write DOS or Windows and sell it to OS/2 owners in Win-OS2 mode. Lack of programming language support except for IBM VisualAge products. But third party driver support, Microsoft did it better than IBM and got more OEMs to make Windows drivers and not make OS/2 drivers. When Microsoft still supported OS/2 with IBM they got third party driver support for it, after Microsoft abandoned OS/2 the third party driver support dried up.