IBM AIX is a very powerful and extremely stable operating environment. It is well suited for applications that are business critical and cannot tolerate outages. It is best used to address large enterprise level application needs where stability and scalability are of paramount importance. IBM AIX is less useful for small enterprises.
iOS works well when you want solid control over institutionally-owned devices. This generally works best when you play by Apple's rules and buy through them and use Apple School/Business Manager - so if you're going for a BYOD model, this probably isn't the way to do [it]. There is a wide variety of management tools, but bear the costs of each in mind.
A lot of the built-in commands have not been updated in years. If you're used to some fancy CLI options in Linux, you may be out of luck with AIX.
Out of the box, you cannot run open-source Linux utilities on AIX. There is a toolbox you can install, however, it's not the same versions as you would get in different Linux flavors.
Tab completion for files and Up arrow to re-run previous commands don't work out of the box without running a Korn shell. A small annoyance, but one that catches me every time!
In all likelihood, common users will either already have experience with iOS on their iPhones, or will pick it up quickly. The UI is generally simple and mostly visual. Power users, on the other hand, may feel constrained by the inherent limitations built-in. Root access, terminal commands, and deep customization are not really to be found here.
Lots of help articles online for just about everything under the sun. I have never personally had to engage Apple's support team to comment on their helpfulness.
Standard Linux distributions which are used more as commodity servers do not offer the ease of scale and growth that we see with our Aix implementations. IBM owning the HW and SW portions of the stack allows for tighter integrations and better performance windows.
The software updates have a wide coverage for iPhone models and I love updating software for additional features and/or improved software stability. It has also genuine feel of the phones they offer. Easier to set up and use. It helps me do more productive tasks. If I have the latest phone model, I would have additional software advantages that are already included in my OS.
