Those are vanishingly small jobs these days in the US at least. Most companies and guys will specialize in electrical or drywall or something as they become faster at it and time is money in the trades. These skilled jobs typically require more than a single truck's worth of equipment to do quickly.
Like, tying rebar is really hard to do by hand, but they make a gun that will do it for you in seconds: https://amsalesinc.com/products/rebar-tying-gun-makita-xrt01... . You can do a whole pad of concrete in an hour that would take you days otherwise. But that gun is thousands of dollars (supply and demand baby). So having a truck of these time saving gadgets for a bunch of job types isn't feasible. Hence the specialization.
Unless you live in a remarkably remote area, rental yards carry pretty much everything you can need. I've even rented $100,000 excavators I needed for a day quite easily, and it eats into the value of your labor maybe 20-30% at worst.
Oh, I very much have a lot of these jobs at the house. It's just that I tend to call a specialist [0] as the handy men around me tend to, well, not really exist anymore. Besides, most of the smaller things that don't require the really tall ladders, I can do myself.
[0] who then never shows up on time and charges too much. But that's a whole nother story about where I live...
Like, tying rebar is really hard to do by hand, but they make a gun that will do it for you in seconds: https://amsalesinc.com/products/rebar-tying-gun-makita-xrt01... . You can do a whole pad of concrete in an hour that would take you days otherwise. But that gun is thousands of dollars (supply and demand baby). So having a truck of these time saving gadgets for a bunch of job types isn't feasible. Hence the specialization.