While on the subject of saving money, how about using the system mentioned above to spin the wheels up before touchdown and save on tire wear? Not an engineer or anything, just have strange ideas sometimes!
Probably because it costs more to install and service the motor and control switches that spin the wheels.
I use to get these ideas a lot from my young engineers. After I sent them back to their calculators to do a cost estimate comparison, they never came back again.
It's easy to be immaginative, it's tough to be practical.