My neighbor is a plumber. He only does commercial stuff. He makes more than $100k, easy.
I did a tiny amount of construction plumbing and couldn’t stand it, it was like a guy who is a great mechanic with his analyzing instincts and investigative intelligence that make him exceptional as an auto mechanic, worth top dollar and invaluable to customers, being stuck on an auto assembly line putting together the same shiny new parts over and over again, drone work, robot work, and your fellow workers are not the most interesting either.