Can you imagine what kind of autonomous robot would it take to be able to do regular plumbing work, in cramped spaces, with low visibility, requiring relatively significant physical efforts? The software side of it can definitely be solved (though not easy at all). The hardware side would require significant breakthroughs, if the device is going to be cost-effective even compared to a highly-paid certified plumber.

Same applies to electricians, and in certain degree to car mechanics, too. We have large swaths of infrastructure built with maintenance by humans in mind. These humans are not exactly easy to replace with robots.