Would a chain strip built in the airport taxiways, help airlines in saving money and time during taxi?
Airports already have several ways to move aircraft along taxiways


Aircraft engines (least economical but always available)
Tugs (often used for pushback from terminals)
Aircraft wheel-motors (some makers are at least planning for electric taxi)


A system of fixed chains along a complex network of intersecting taxiways would be expensive to install and maintain and might be unreliable (e.g. icing up in cold weather). 



See also


Does it make sense towing airplanes to the head of airstrip by external means?