Standardising wireless power.
This might be a bit simplistic, but isn't it just a coil, with alternating current running through it, inducing alternating current in another coil? So a device could cater for its own voltage by having the right number of turns in its coil (just like in a transformer). It could even have a multitap coil which can be electronically switched, and adapt itself to incompatible base stations. Or am I missing something fundamental?
This could be one example of where that classic internet-age mis-spelling of "losing" might actually work...
"I fired my power out into the air,
It did some work, I know not where..."