A substantial factor in licensed tradespersons' ability to collect the wages they get is that many situations require the work be done by a license holder. For example electrical or plumbing repairs done to satisfy a building code violation are often expected to have permit paperwork documenting the repair. License = ability to pull permit.
What, can't a tradesman certify that a job was done to code remotely? We allow people to get degrees online.
Of course, some things (is the screw really tight?) can't be verified by video only, but possibly one could devise smarter tools like pressure gauges and some such that can be shown over a video call.
I'd be curious what the cost savings in the end were regardless.
An untrained hand takes so much longer to complete a task that a professional is used to regardless of the understanding. Do you want to slog along a journeyman in video conference for 8 hours or hire him for 2? What's your cost going to be with either?
Beyond that a lot of physical tasks can be done blind, does he "see" that you've threaded the hose properly or applied the compound properly when you're doing it by feel as your eyes can't reach behind whatever you're working at?
I like the idea but I always relate back to my own real world experiences and think about how inefficient it is to remotely task with someone. Ever try helping your parents navigate their computer over the phone? Imagine doing that with a professional @ $100/hr or whatever to replace your faucet or wire new fixtures and run cabling to a breaker panel
The licenses tradesmen carry also tend to be paired with some sort of insurance or bond to back up the fitness of their work. Were it my plumber's license and liability coverage, for example, I'd be hesitate to approve a sweated pipe weld just from video footage. And the market for cheap sonar/magnetic gadgetry or whatever for laypersons to inspect the welds on bathroom plumbing probably just isn't there.