Here in Norway all electrical cables are installed inside plastic tubing, so you can pull out/replace them if you need to, with no need to tear down any walls. (BTW, we also do the same for water pipes: They are always installed as pipes-in-pipes, with a central drain point for the external pipes: This way any leak will be contained and you can fix it by pulling out the broken (usually due to freezing in winter) pipe and replace it.)
When we built a new home a few years ago I specified that the electricians should put in spare conduits between the main breaker room and every other room in the house, except bathrooms, this way I could pull whatever cable I would need.
PS. The sad part of the story is that the installation company had never done anything like this in a residential building before and they messed up badly, omitting the spare conduits to important locations like the living room/entertainment center. They ended up giving me a substantial rebate but I'm still a bit pissed off.