It's the only place I know of that doesn't have a clear, fixed-time based, permanent residency program, without quotas.
As an example, in all European countries that I know of, permanent residency works like this:
- you need to fulfill some prerequisites (usually a civics course/test, a language course/test, no criminal record, be employed or in education)
- then you need to be in the country for N years
- then you need to apply and you generally get the result in a few months, maximum
That's it. For the average person the "hard" requirements are actually: learn the local language up to the required level, spend N years.
It doesn't matter where you're from.