The hardware miniaturization gains have finally dried up, though.

I am pretty certain that the current state of the art silicon feature size won't shrink again for at least another decade or two.

It normally takes about a decade to mature a tech which can create a smaller feature size into something commercially viable for mass production scale, and no further improvements have been in the pipeline for that long now.

So it's like the "next piece" indicator while playing Tetris is just blank.

Right: Capital markets know how to efficiently turn dollars into tokens, even if it means tens of billions invested in new DRAM fabs.