alt Hacker NewsI had Fujutsu laptops that were far lighter and smaller than Airs, touchscreens in the late 90s, convertibles, 2 in ones, touch bars (Thinkpad). Plenty of designs that don't build around ATX type specs, and things that do (open frame cases, and the vast array of expansion cards that benefit from it). PCs that snap onto a monitor. Things Apple copied or hasn't gotten around to yet then claim then as revolutionary. Apple has more integration and can be more strategic (when they don't need bailing out), but as one company they do far less exploration.
There have been a few cool ideas from PC makers I'll grant you that, but looking at the offerings from the 4-5 largest PC makers today it basically looks like it did 20 years ago.
I'll also grant that Apple has gotten more boring with age - the G4 imac is still the coolest computer I've seen to this day. Just so outrageously out there. Current offerings are efficient but a bit boring. Apple Silicon could make something like the trashcan design work, when it basically failed with x86 PC components.
Having said all that I wouldn't mind seeing an ecosystem of ARM-based components even if they followed the ATX standard. Being able to buy an ARM-compatible motherboard and upgrade my ARM-based CPU and pair it with separate RAM and SSD's would be nice!