I'm not sure what you mean. Do customers care about power lost due to inductive process? Don't they just want their phones to charge faster and without wires?
Apple like to tick the boxes when it comes to eco standards blah blah. If - and I don't know if it's still the case although I suspect it is - 30%+ of power is lost during the transfer, no matter how fast it is, I can envisage Apple choosing not to go that route, even going as far as dismissing wireless charging publicly for that reason.