I'm going to call bs on the original reason for why this was canceled. Apple already makes crippled products on purpose, they also put in components that do not last very long like GPU's. It could have just made magsafe like connections using magnets on the devices that lock them onto the mat for proper charging, with the device shape printed on the mat. I say a possible reason they will not go forward with it is that they could not own the technology or control the company that will supply the components. Without them being able to get the parts cheaper and cheaper every year their strategy to maximize profits over time would not have been possible. They don't want another qualcom situation. Also, if the technology is at a stage where it cannot leapfrog the competition so they can first give the crippled version and then over the years upgrade it to its actual potential and the technology only manages to stay at the same pace as the rest of the competitors then it won't pour their money into the companies who supply the parts.