Technically plotting is the really bad part, farming mostly just occupies storage and uses a bit of CPU. Not that I personally am a fan of either, but plotting is the destructive part and then you 'farm' the completed plot forever and that can be done on inexpensive spinning rust drives by a cheap PC.
A plot is basically a 100GB file (or file) that is associated with your public key. You can move it around how you want. Many people are creating them on machines with nvme disk and then they are copied over a network storage somewhere else.
Sounds like it's only a matter of time. We didn't have an incentive to create chips like the before, but just like with the specialised mining ASICs, we may see one soon.
Flash memory is uniform. Every flash memory die is (hopefully) identical to the next one. Once you know how to produce a flash memory die of a given size, you can produce a million of them, and that's worth a million times more.
Chia plots are unique. Producing two copies of one isn't just pointless, but undesirable; it means that someone else might get a copy and reap the rewards instead of the person who plotted it.