macOS' support lifecycle is terrible
in 2025, many OSes out there have become rolling release, where you're expected to be always up to date or else things break or your computer yells at you to update (sometimes forcing you if you're a windows user)
microsoft is probably well best known for this. windows update.is aggressive as hell and loves to force you to update whenever the automatic update service decides is appropriate to do so. apple pioneered rollback prevention with SHSH blobs preventing iPhone users from downgrading their OS beyond what apple currently is signing. chromebooks update themselves quietly and typically seamlessly, the only indication of an update being a new feature or (somehow) even more horrifying slowdown. rolling release is just a market standard now.
but for everyone who isn't "your average consumer," rolling release can be annoying, and a downright nightmare for enterprises and pro users relying on a fixed configuration for everything to work smoothly. as much as i'm sure they don't want to, companies offer solutions for these cases, typically for a pretty penny. but it's better than nothing. microsoft offers the long-term servicing channel (LTSC) for windows 10 and 11, offering 7-10 years of support for each release, google offers a long-term support channel for chromeOS wbere devices get regular security updates but only get version bumps every 6 months. this way, you stay secure without having to factor in potentially breaking updates.
apple...does not offer any such options. despite macs being the de facto productivity machine, apple just does not offer long-term support. you get 3 years of security updates, and that's it. you're expected to hop up to the newest macOS release when that time comes, or yearly if you're the plain guy who simply needs a mac for work. but for everyone else, three years is not enough for macOS. with each release dumping huge overhauls to the system, and with how deprecation-happy apple is, a mere 3 years isn't enough to ensure long-term support for those who need a stable, consistent system for their needs.
for example, in 2021, apple released macOS 12 Monterey, which removed the bundled PHP from the system entirely. this left webmasters with two options.
1. keep on macOS 11 Big Sur where PHP was present and keep it for as long as possible, kicking the issue down the road.
2. upgrade to monterey and break the server, then spend god knows how long searching for a method to reinstall PHP, discover that said version behaves far differently from the now-available versions, and spend MORE time trying to fix that.
both options suck. in a perfect world, Big Sur would simply have 7-10 years of support, allowing more time for a seamless transition to a more modern platform. we'd have ample time to move over, and extra time if needed for any legacy systems and programs for which full replacements are needed if new macOS versions break them. macOS server didn't even offer LTS, prior to its relaunch as a add-on for existing versions, the standalone versions had the same support cycle as their consumer counterparts did.
apple just needs to start an LTS channel. they have the resources, they have the money. it would be great for the many IT professionals currently stuck upgrading every mac they have every 3 years because LTS just doesn't exist.