Dataram, back in the day, made 'generic' core memory planes. That is, the had a relatively speaking simple electrical interface, and many vendors just implemented whatever was needed to hook it up to the vendors (usually) proprietary interface.

I have a couple I've been (very) slowly trying to get working with a modern-ish microcontroller with USB connectivity.

You can buy FRAM (Ferroelectric RAM) which are effectively the same thing just in smaller package. But I have seen them only about few kB. However the amount of R/W operations is effectively unlimited,

With the current DRAM shortages, this couldn't have come at a better time.

I thought they meant bus width ...still impressed for entirely unexpected reasons.