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What if C isn't portable, only non-C-compatible architectures went extinct?

I'm half joking, but:

VLIW/EPIC architectures are dead, despite CPUs desperately needing instruction-level parallelism.
Instead of SIMT we have hyperthreading at home, and bug-prone threads with context switching in software.
Instead of hierarchical memory, we waste 8 bytes on all pointers & emulate thread-local memory in software. Larabee was DOA & SIMD barely exists. MOS6502-style stack+registers are only on GPUs.