It’s crazy to think a Raspberry Pi 5 would wipe the floor with a PowerBook G4 laptop in terms of raw performance.

Wish we could have (magically rewritten) native OSX Tiger optimized for open ARM / RISCV laptops. Yeah we have GNUStep but I mean real OSX with all the attention to details this meant 20 years ago.
Aside from the unimaginable amount of work I fear what would break this dream today would be encounter with the modern ad and JavaScript-infested web.

So many websites can bring a  class CPU to its knees and of course ruin the whole visual. Running an old PowerPC Mac today I still a great experience until you meet with the internet.
@santi not even enough ram to run modern Chrome on something from the early 2000’s.

OS-X Cheetah technically could run on 64MB of ram. The max you could put on an iBook I think was 320MB.
@bryan I sometimes run modern WebKit on G4 on #MorphOS (on a 800 MHz iBook) and it is so evident that even though it does work it just is a monster.

Typically on MorphOS every thing is lightweight and launches instantly. But then you hit the browser component… it is only really comfortable on smolweb and then it doesn’t make any sense having this engine around that is likely heavier than the operating system itself.