Even if you had a working prototype, there's no way people will buy it until you can solve reliability, yield, cost, etc. A prototype that took 100 tries to make and cost $1000 and works only for a minute under the right conditions will never find a buyer. It's not enough to transmit wireless power - you need to transmit wireless power cheaply, reliably, safely, durably, etc.
Especially when what you're competing with is a conventional power supply that costs less than $10 to make, is small enough to carry in your luggage and can be used wherever there's an electrical outlet. (The device in the article is going to require an unobstructed path between the charger and the device to be charged, so it won't work very well in a place like a coffee shop where there are lots of bodies and furniture in the way.)
