I’m sorry if this sounds like a stupid question but why won’t android just straight up run like Linux distros that almost run on any computer? Why does each model under each manufacturers require separate maintainors seperately? Aren’t they running like almost similar hardware like processors from Qualcomm, mediatek, Exynos, etc? Why hasn’t there been a single android os that is compatible with all the device?
Also due to the windows, windows OS is closed source so device manufacture can’t simply modified it for their devices. They have to pass compatibility test which includes UEFI + ACPI compliant firmware to be present to be actually windows compatible (to get that sticker on their devices) without that microsoft will not provide windows licence to you i guess