OS/2
On one hand, it was ahead of its time, the design outstripped the hardware's ability to drive the OS. On another hand, contracting Microsoft and paying them by the number of lines of code produced, made OS/2 overly bloated and slow.
They (IBM) had an opportunity to release it before windows 3 but opted for a complete revamp of the desktop UI that delayed it until after windows 3 hit the streets and it was slower buggier and bloated.
On one hand, it was ahead of its time, the design outstripped the hardware's ability to drive the OS. On another hand, contracting Microsoft and paying them by the number of lines of code produced, made OS/2 overly bloated and slow.
They (IBM) had an opportunity to release it before windows 3 but opted for a complete revamp of the desktop UI that delayed it until after windows 3 hit the streets and it was slower buggier and bloated.