Unclear. Security of the future compute might benefit from very strong constraints at the substrate level, and observing the physical world in any way isn't necessarily a given. For example, if you want to backup a large swath of a civilization, it might be appropriate to make relatively rare snapshots (sending them to distant locations) if the subsequent (physically damaged) computation could be deterministically replayed in case restoring from the backup was necessary. Distributed backups are the way to make death technologically impossible, even if a galaxy gets blown up by aliens or something, as long as the global civilization that would recover the physically damaged parts from backups persists.

Quantum computing is an interesting case. Possibly it's not good for anything that shouldn't stay at the substrate level, keeping the computations on the inside updateless with respect to observing the results, so that only the outer substrate (and its governance) gets to observe such results. It might be quite useful for dealing with the physical world stuff, therefore not very relevant.