Yeah, I'm skeptical about plans to build whole integrated circuits out of them, but these high frequency, low-loss devices could be killer for a lot power electronics applications— motor controllers, DCDCs, etc.
Not sure about high power, but the physical requirement for small size scale combined with the engineering goal of high current is usually contradictory.
I do absolutely think this could be awesome for lower power ultra tiny DC-DC converters though. For instance:
is pushing to high enough frequencies so as to not need an inductor at all. Problem with high frequencies is that usually the efficiency drops, so there's a tradeoff. But if you can avoid the switching losses by moving to a transistor with higher operating frequencies, it might be quite good =)
Or the tiny size might work well for letting you do cool stuff like on-chip DC-DC conversion where you don't need an inductor because it's all so fast...
