Why remote weapons still competed for Allied resources

Why did the Allies make relatively limited use of remote weapons despite wanting to protect their personnel?

Reliability and competing priorities mattered, including the option of improving protection for crewed systems instead.

A preference for protecting personnel did not remove the technical and resource costs of remote-controlled weapons. Reliability is offered as one reason for limited Allied enthusiasm, alongside the availability of personnel and equipment for existing methods. Research could also improve protection for crewed weapons instead of replacing their crews. German tracked demolition vehicles and Italian explosive boats supply comparisons. Even very large Allied resources still had limits, so a remote system had to compete with other uses for development effort.