In airliners without flight by wire, the levers move because the automatic system it's engaged directly to them. With fly by wire you have to replicate that sys

In airliners without flight by wire, the levers move because the automatic system it's engaged directly to them. With fly by wire you have to replicate that system, at least with the throttle levers. I guess that a servo motor and a control-indication circuit it's not the cost that concerns Airbus. It's all the chain of costs related to changing the flight philosophy. In the case of the sidestick you could link them mechanically, with a disconnect lever to isolate them.