The main causes of incompatibility were the transition from ball-and-powder to rimfire cartridges, then the transition from rimfire to centerfire. It's surprising how little firearms have changed in the past century. 9mm Parabellum is 125 years old. The Browning short recoil action (used by most handguns today) is over a century old.
you can do that, in fact I know that Austria still has a mid 19th century train in regular operation (https://de.wikipedia.org/wiki/SB_alt_23)
if you're looking for commuter trains a lot of early 20th century ones still operate around the world.
It is amazing, though. Wintel is basically a Matryoshka doll (Russian nesting dolls), where each version contains all the previous versions. (Just look at how a PC boots up!)
The dedication to compatibility is commendable, and you don't really see it on the other OS's. On that note, this is one of my favorite articles:
Win32 is the only stable ABI on Linux
https://blog.hiler.eu/win32-the-only-stable-abi/
I think that's very funny. Speaking of which, EasyToon also runs in WINE, of course :)