The AS/400 platform is still alive and actively maintained by IBM so I’m told, although I think it goes under the Power Systems and IBM i brands now. I know several business still using them, with development teams still coding with RPG etc. Apparently there is also reasonable ecosystem of middleware to interface with more modern systems, and some sort of *nix compatibility layer to run more modern software on the platform.
I’ve never touched one myself, but they are keeping a few greybeards I know in steady work.
macOS offers a lot of stability, it’s reliable, predictable, boring even. It works out of the box and stays that way, it survives upgrades, and rarely crashes.
The release cycle is steady, and changes are generally gradual and incremental. Mac users don’t usually have to worry about a new release breaking their system or their workflow because a developer wants to reinvent the wheel or a UI designer wants to make their mark. The only big shifts have been processor transitions.
The Mac ecosystem also allows users to have a foot in both the proprietary and open source ecosystems on a single platform. Being able to run, say, web development environments and Adobe CS for example, can be a lot easier than farting around with Wine or WSL.
Granted, there’s plenty of downsides to the Mac as well, but the platform definitely has merits.
It wouldn’t surprise me if there were still a few production Itanium systems in server rooms somewhere, running some obscure or bespoke proprietary software that can’t be migrated to anything else. There are other more arcane systems still being limped along in businesses around the world, for some frighteningly critical applications in some case.
Itanium support being dropped probably has a handful of admins panicking, but in the eyes of the kernel developers it’s a case of “put up or shut up”.
This post is truly glorious, this should be the founding exhibit of the museum of Lemmy.
I am truly grateful to witness this moment.
In case OP is still with us, my advice would be anti diarrhoea medication, consume minimum liquids, avoid fibre, pack MREs which are often formulated to be a bit constipating. But above all, question why on earth you would be doing this in the first place!