Comment by torginus
2 well identifiable classes in western societies are landlords vs renters, where the latter is paying a huge chunk of their income to be able to use an appreciating asset of the former.
This class thing is especially identifiable in Europe, where assets such as real estate generally are not cheaper than in the US (with the exception of a few super expensive places), yet salaries are much lower.
Taxes tend to be super high on wages but not on assets. One can very easily find themselves in a situation where even owning a modest amount of wealth, their asset appreciation outdoes what they can get as labor income.