Re: Amidst all the wailing and knashing of teeth here
Live OS upgrades -- Live Patching for kernel, userspace is a WIP and high risk
Active Memory Expansion -- zswap depending on exact requirements
Active Memory Sharing -- Not sure, could be done with swap files depending on requirements
Memory De-duplication -- KSM for anonymous, file-backed is a mixed bag
Great Cohesive admin framework -- undefined what this means exactly but admittedly how to tune certain parameters lacks consistency
ASO/DSO -- tuned but by and large, live monitoring for automatic tuning goes to hell if the workload does not behave as expected
Workload Partitions -- cgroups, capabilities and semantics of the isolation varies depending on the resource so it does depend on requirements
Suspend / Resume -- close the laptop lid, otherwise depends on the hardware and whether the firmware can handle being fully suspended or not.
Great Filesystem (JFS2) and volume manager -- variety of choices, depends on requirements
"ODM" as opposed to DevFS -- devfs hasn't used in years
Transactional Memory -- supported but hardware support has been iffy so while the software can use it, the hardware does not always behave correctly or gets disabled in a microcode update
Support for CPU embedded accelerators -- driver-specific so depends on whether you mean something ppc64 specific or a missing driver for an x86 accelerator
Memory Protection Keys -- already there
There are things that AIX does better due to the tight integration with hardware and the ability to always control the entire software stack but a number of the "enterprise" features you claim are missing do exist albeit with different terminology and sometimes capabilities. Often, the priority that support is improved depends on how many customers actually request it as opposed to just filling out checkboxes that sound Enterprisy