What percentage of the market is A/V build to actual hard real-time standards, and not expected to run on devices that can't provide it (so no PCs with normal OSes, no smartphones)? For the vast majority, soft real-time is fine, since an occasional deadline-miss results in minor inconvenience, not property damage, injury or death.
I assume some dedicated devices are more or less hard real time, due to running way simpler software stacks on dedicated hardware.
I assume some dedicated devices are more or less hard real time, due to running way simpler software stacks on dedicated hardware.