M4 Macs can't virtualise older macOS

In my opinion, Rosetta should be more heavily gated* to push everyone from Adobe to Steam to build for aarch64. Countless "Apple Silicon native" claiming tools require Rosetta under the hood for dependencies or even (bless their hearts) only their installer.

* Like right-click to open packages or install not-from app store, except Rosetta dialog should note that once it's installed any other old software not made for this system will run without warning. Turns out avoiding Rosetta is a great way to ensure not just apps but your CLI tools are all up to date... Alternatively, make Rosetta sandboxed with apps, and/or let it be turned off again more reasonably than the safe-mode surgery required now.

Honestly I see game developers simply abandoning MacOS (more than they already have) if they need to do more work on their back catalogues. Nobody at Adobe cares if CS3 doesn't run on the latest MacOS, it's no longer a revenue source for them. EA would care a lot more if all their games older than 4 years needed work to run on MacOS, there's a lot more long tail revenue in games (but a lot of that is over aggregated back catalogues where the revenue per title is pretty low even if they sum up to a significant amount) than there is in the more typical B2C cloud SaaS attached apps that the App Store model is designed to serve.