Hijacking power is really easy and really dangerous: Get some wire; attach a hook to one end; climb up a pole and drop the hook on a live power line.
If you survive, congrats! Now you have electricity and you don’t have to worry about paying for it!
(You do need to worry about you or a loved one getting killed by an improperly grounded appliance, electrical fires, exploding transformers or other catastrophes, but still.)
Long story short, power theft in developing countries is a huge problem, which is why Britain’s National Grid just launched a pilot program to steal power from electric cars.
If your electric car’s plugged in in your garage, National Grid can stop charging it and instead drain it to boost the grid when supplies are low.
Why are they bothering with a trial program? They need to see if it will work, of course, but do they think their customers are going to enjoy discovering National Grid siphoned their car dry when it’s time to go to work?