There's lots to read! Unfortunately, separating the woo from the real...
AFAIK, it's unclear. Spark gap radio (and some interesting observations about lightning strikes) indicate that you can "do stuff" to the Earth's electrostatic sphere, but whether or not that means you can resonate it? And then use that resonance as a way to transmit power? Not clear. (and ofc even if all that works, what're the side-effects?)
AFAIR, most of the "of course it wouldn't work" critiques posit something like a radio broadcast model; instead of the OP's microwave beam, just a microwave broadcaster, essentially, which ofc runs into inverse square law issues. But that's critiquing an entirely different theory of operation, so...
I suspect it's either unworkable in practice (the "resonance chamber" is too complex/dirty to properly resonate) or unfeasible (resonance chamber too damn large), although I wonder if the work done on wave-displays (where you use wave interference patterns to display text) would allow you to deal with those issues. I also wonder if the same ideas writ tiny could be used in MEMs, but that's ridiculously idle and uneducated of an opinion - I know next to nothing about MEMs.
I'd start by looking at spark-gap radio, and progress into Tesla's work from there.
It's been awhile... You sever seen a slow-mo of a water balloon being hit by something? There's a wave that kinda travels through it.
Apparently, lightning strikes do the same thing to the electrostatic sphere. One of the super interesting things here is that, if you measure the speed of 'wave', from, say, Altanta to Sydney, the apparent speed is FTL.... but if you measure the distance as through the Earth instead of across its surface, it works out.
It's also why (apparently) spark gap radio works in caves and tunnels.
It's been awhile, and my understanding wasn't great the first time, but.... no? Spark gap radio works in caves, but not in space. EM waves == photons, right? That's Marconi radio.
