You don’t want elections anything mixed with computers until computer architectures are more robust and verifiable. Not to mention that to mess with elections takes much fewer resources when they’re digital than when you have to corrupt thousands of vote counters.
Just gonna leave this here xkcd.com/2030/
Mechanical hard drives are not 100% semiconductors like SSDs. You need improvements on materials science to cram more signal retention on paramagnetic materials.
As for SSDs, milking the current stock is part of it.