High resolution microscopy and electron beam microscopy are both industrial production technologies that cost far less than extreme chip-making. That is: ther

High resolution microscopy and electron beam microscopy are both industrial production technologies that cost far less than extreme chip-making. That is: there is already a business that supplies these technologies off the shelf. It's still not truly cheap, but it makes sense in the context of warehouse computing, in the same way that massive tape robots do. (I still think it's unlikely the economics of developing an entirely new storage tech like this will ever beat the established players, but the cost of the readers and writers is the least challenging aspect).