Whatever happened to Marx’ “ownership of the means of production” definition? Also, even beyond that, it makes sense to have an understanding that the precarity felt by an upper middle class person is not remotely the same kind of daily struggle faced by a lower middle class person. Not being able to afford property vs. not being able to afford food.
Ultimately it is important to recognize that all humans in the capitalist system are recruited to participate in an extractive, antihumanist global process.