This article and a lot of the discussion fails to make clear that there is a big difference financially between being a plumber/electrician/hvac tech and owning a plumbing/electrical/hvac business
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It seems to cost about $10 to 50k to acquire the tools, vehicle and licenses to start a plumbing business. Is there something else that’s substantial beyond the normal attention to detail and savvy that every small businessperson must have?
So at least sometimes, it is life or death.
And now that I say it: hospitals need electricians too. Electricity goes out in a hospital for too long, lots of people die.
And actually a third point: electricity -going out- is not the only thing that could kill a client, it's not too hard to start a fire.