Irix did have a very nice and flashy desktop, but compared to bsd or even linux the underlying unix system was... a bit off. and I don't think this was just fam

Irix did have a very nice and flashy desktop, but compared to bsd or even linux the underlying unix system was... a bit off. and I don't think this was just familiarity with bsd, solaris felt the same way. I think it is the dynamic pressure of a commercial closed source unix vs a community source available unix, where the commercial unix is pressured to maintain compatibility and thus also maintains a ton of old footguns. The community unix allows itself to file them smooth and become more ergonomic over time. At the cost of being incompatible. However compatibility is not as much as an issue because you have the source for most of your programs, it is much easier to adapt to incompatible changes.