Earlier quoted context omitted.
There is another aspect too. It completely breaks your body. Electricians get carpal tunnel worse than information workers by constantly squeezing lineman pliers, knees get shot. Your career path is work like that and hopefully before you get older, start your own company and hire younger people to do the body breaking work. But not everyone in the field will end up doing that so many end up in bad shape
Whenever tradesmen come to my house for a job, the ones who are my age, 59, are hobbling and broken. A couple other things come to mind: Places where trade work pays more, are probably also more expensive to live in. And the trades are at the mercy of the construction cycle. I could imagine the trades being more attractive in countries with better labor laws and social safety net.
They even joke about having to learn portuguese if you want to work in construction due to the massive number of portuguese tradesmen across Europe