I've noticed this too. The sad thing is that when we were trying to get a dog, the shelter was packed to the helm with staffies, malamutes, lurches and collies (usually ex workers). It's the same breeds over and over again that are mistreated and mishandled.
I would hazard that very few people are able to effectively look after a malamute (or indeed, other larger breeds such as wolfhounds, Alsatians, Akitas etc etc). Most people I know with them have only had problems because they just can't look after them properly.
And a flat is no place for a large dog.
I live in an area where most if not all the houses are flats, from converted semis to huge tower blocks. There are I think about 15 houses in the 7 streets along my row (grid fashion) where there might actually be a house and not a pokey flat. Yet every single time I walk to the shop someone walks past with a dog.
We are a mile from any green space, a mile from a proper park and a mile from the beach. They end up walking the dog in busy inner city streets between grey buildings and along very busy roads. It's ridiculous and highly unfair to the dogs that quite rightly want and need to run, play, be exercised, socialised, have green grass to run on etc.
People in villages, farms, maybe suburban areas I can understand having a dog. In the inner city? I hate to say it but I do think most people do it for status and protection.
I always want to say to people in the area that if they must have a pet then get a cat or preferably something that needs a cage and doesn't care whether it's outdoors or not, like gerbils or fish!! Of course I'd never say it but having in 3 days met two beautiful dogs who've been run down in my block... Ok dogs and cats can be knocked down anywhere but it would be a whole lot less likely in a rural quiet area as opposed to on the corner of a busy A class road!