Comment by ajxs

> ...lost the plot...

> ...jettisoned all their knowledge and tooling in the space.

ARM made a smart decision not to compete against Intel/AMD at the cutting edge, and instead completely dominated the low-power CPU market.

> These should be solved problems.

They are. The solutions have nothing to do with the ISA. The device discovery functionality you're talking about (ACPI/BIOS/etc) is provided by the motherboard, and (in the case of ACPI) made available to the OS by the bootloader. SoC's don't need sophisticated device discovery.