I've commissioned dozens of robot cells (6-axis industrial arms for manufacturing are old, proven tech) and the wear and tear costs have been inconsequential. Even a large arm like a Fanuc R2000iC only uses about $0.50 in electricity per hour, some cells use significant power for pneumatics (in particular, compressed air venturi vacuum generators).

A couple grand for gearbox rebuilds every few years, replacement vacuum cups or worn hard tooling as needed, troubleshoot electrical issues as they arise... and your quarter million robot cell ($60k of that is the robot, most of the rest is NRE labor) will only need one human instead of eight to spit out parts every 60 seconds for the next decade.

Unless you think the humanoid robots are going to wear out significantly faster than existing robots, wear and tear costs are negligible.

With tight process controls, turning a work cell that has multiple humans doing manual labor for material handling, fastening, inspection, labeling, etc. into one intelligent human keeping the automation well adjusted is a solved problem. Eliminating that last human - the one that makes decisions instead of moves materials - with a humanoid robot is going to take decades.