Indeed [1]. For context I design antennas for a living (yes including "meta-materials", AESA, and high power), so not the first wireless power transfer design I've encountered. If this is different, awesome, I'd love to read a whitepaper.

All I'm saying is I hope you have a background in EM. There's lots of stuff that sounds great in approximation and models, but breaks down in reality.

[1] G=4piA/lambda^2 - I tacked on 70% eff which is mid-high for a parabolic dish