I've seen both sides. I had a ticket in Australia, and I've done unlicensed work here in Canada (one of the first things I bought was a copy of the "Canadian Electrical Code, Part I"), and my step son is currently an Electrical Apprentice. Licensed electricians that I've talked to here are shocked to discover that I had a 3 phase ticket in Australia, as over here, a 3 phase ticket is not common unless the electrician does commercial work.
Licensing won't help where there are lazy and incompetent people that somehow managed to get licenses. The crappy and dangerous jobs I've encountered in Australia done by "licensed electricians", is only marginally better than some of the work I've encountered here that was done by home handy men.
In Australia, I had an in-wall fire I traced back to bad electrical work. The electrician that wired up my house 7 years before I bought it, was too lazy to strip wires, and just did up the screws in the outlets really tight so they cut through the insulation. One winter, the load of an electrical heater was too much for one of those connections. I put the fire out before it did any real damage, and the cut section of in-wall cable with the wall socket attached, and a melted appliance plug still in the outlet, became an example piece for the electrical instructors at the technical training school I taught at. After that experience, I went through every electrical connection in the house and found a few more examples of the "unstripped wire termination procedure" the electrician used.
In my parent's house, the lights in a reworked section of the house would stop working if the earth connection was opened (the earth connection sparked when it was opened). I traced back the wiring and discovered that at one joint, the licensed electrician had managed to swap the very dark green earth and black neutral line.
Much of the bad home handyman work I've encountered here has been cases of the wrong wire being used (wrong gauge and/or wrong insulation colours), terminations made in free air and just taped up, and strain relief/cable protection fittings not being fitted. While I hate the Wire nut/Marette connections they use here, they are preferable to the wires being simply twisted together, wrapped with insulation tape, and buried under the insulation in the attic.
The house I currently own over here was built before there was electricity available. It was retrofitted with power (thankfully I've encountered no knob and tube), but most of the house is wired with just twin slot sockets (no ground connection), and none of the upstairs bedrooms (6 of them) have wall light switches (just pull cords on pendant lights), and 2 don't even have an outlet in the room.