[usrusr]

Reminds me of the various "what if all memory was non-volatile" that made the rounds when Intel Optane entered the stage. A bit like the inverse of this, but the caveats might turn out similar: in one case you'd still want a well-defined resettable area, in the other case you'd still want to avoid having to deal with arbitrarily long addresses which would at some point become as bad as seek times even if hypothetically seek times in the stricter sense did not exist.