[Yo-Yo]

Is it possible to use this technology for even the large transformers, making them both cheap and small (and easier to harden against attack), not to mention easy to replace?

Short answer: No. Long answer: No.

[cuban leaf]

Short answer: No. Long answer: No.

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I kinda figured. That said, what is ridiculous and expensive today is no big deal in the future.

I remember when I sold Laserdiscs I asked a Pioneer rep if they were working on a Laserdisc player that would also play the newfangled CD’s. He said they were different enough that it was not possible.

Yeah, and the next year the Pioneer laserdisc player also played CD’s. Oh, and they are no longer $1200. ;-)