I remember running Photoshop 3 in OS/2 at a publishing shop. No issues. It subjectively felt more robust than Windows. About 10 years back I worked at a telecommunications company. I was surprised to see that all of their comms hardware was running OS/2 or Solaris. The IT admin told me that they were very good for utility computing. Once you had the system in place on premis, you very rarely if ever had to worry about it. I suppose that once your have the formula for a solid system, you don't want changes and updates. You just want it to do the one thing it does really well.. OS/2 was good at this.