[ChuckNorris89]

Easy, inherited wealth. Germany has one of the most unequal wealth distributions in Europe.

Their boomer parents worked hard and saved a lot and managed to buy lots of assets, especially real estate, back in the 60's - 80's when salaries were high and properties were cheap. Now they can just kick back and relax while all that sweet rent money, that skyrocketed in the last two decades, comes in.

If you move to Germany now you definitely won't enjoy this kind of standard of living as your rent costs will be financing their mortgages while you won't manage to save enough to buy one of your own since property prices now are way higher, wages are low and taxes are high.