With everything going wireless, what about wireless power transmission too?

Tesla was not cheated out of his royalties. At the time Westinghouse was due to make a huge royalty payment to Tesla. Westinghouse was very much short of cash with the AC/DC power wars with Edison power at the time.
Tesla volunteered to sign away his royalties back to Westinghouse at the time.
It is still no excuse for Tesla having to live in complete poverty like that.
Westinghouse should have compensated Tesla when they got back on their feet.
There were many political forces against Tesla, Edison was most notable, power utilities companies and various agencies of the government whom did not understand the risk and were just generally afraid of his work.
The docterine at the time and is still present today for those in power that do not understand the technology, assume it is evil.
Edison did not understand calculus beyond the fact that it existed, therefore AC power was evil.

Tesla's wireless transmission experiments were a case of the "unknown risk of the new". Tesla died of cancer. There is a famous picture of Tesla sitting in a room with a high frequcny Tesla coil creating dancing sparks through out. As it was high frequency, the current did not penetrate his body, and he was not killed. He knew this physics very well and knew it was safe from electrocution in that room. But in light of modern knowledge, one has to wonder if all that current flowing over his body, in his daily life, was not a contributor to his death. We are not talking milli-watts from a Cell phone here, but tens to hundreds of kilowatts of his wireless power transmission experiments.
Radio wireless transmission of power is not a practical technique. It has niche applications, such as RFID and microwve-ovens and diathermy. But it would greatly disturb wireless communication applications and create hazordous situations if generally applied.

I recently demonstrated a small wireless setup on my online tv show called The Tennessee SuperLab. At the individual level, companies are focusing on convenience...you come home and are able to charge multiple devices on a single pad without having to plug those devices in (the pad itself of course it plugged in). Where the real value resides is in the potential to charge large groups of devices simultaneously. Consider a pallet of devices that have been manufactured and are all individually boxed, then all of those boxes placed on a pallet. Wireless energy would eliminate the need to charge each device with an individual plug/charger prior to shipping. A Faraday cage dropped over the pallet will eliminate any EMF from affecting workers or other electronics. Nasa was searching for a similar solution that would allow them to power & charge equipment within the shuttle prior to launch. This would eliminate the need for "tethering" power chords to the shuttle's frame prior to launch.

Westinghouse cheated Tesla out of the royalties for AC power distribution, otherwise he wouldn't have needed Morgan's money. Tesla died in poverty.

There is some good info about wireless power companies at: wirelesspowercompanies.com

You all might be interested in a white paper just published by WiPower, it provides details on the wireless power techs currently available, it can be found on the home page of wipower.com

While I think many of Tesla's ideas are way ahead of his time. I think wireless power transmission is limited. I think there are some possibilities for "resonant, reactive" transmission over short distances, and for directive transmission of point to point power such as from solar powered satellites to earth. But I think most of us are perfectly content to be "isolated" from vast rivers of electric power by distance or insulation. The idea of being immersed in an electric "sea" of high potential energy is decidedly disconserting.

Tesla efforts are finally coming to fruition, as superior ideas must eventually do. We will find the wireless transmission of power and geothermal power to be the same cornerstones of the future that Tesla predicted 100 years ago.
As Tesla put it so well...
“Let the future tell the truth, and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I have really worked, is mine.”

The truth marches on. All the time, Tesla's work is becoming more recognized, while that slug Edison's becomes more tenuous. Justice!!