Its not my definition. Its a different school of thought that has stood up to scrutiny. It is different to what a lot of people would refer to as middle class and, of course, different again from what you, personally describe middle class to be.
I’m specifically pointing out the problem with the “how they earn income” definition, that it seemingly assumes that the two categories are mutually exclusive, to try to argue that there’s no such thing as a middle class They’re not. Most people who are in what most would recognize as “middle class” under the traditional definition get income through both methods, especially over the course of their lifetimes.
So even under that definition, which attempts to pretend there isn’t a middle class, there is still a middle class: those who have income through both methods, or even hybrid methods (ownership of an actively managed business that allows them to earn money while working but wouldn’t earn money without their own labor).
The median net worth of a 65-year-old in the United States is about $390k, so the income it produces is generally a modest supplement to social security. At the 75th percentile, which is also generally considered middle class, net worth is about $1.1 million and easily enough to provide a comfortable retirement lifestyle.
No, the idea is that the middle class (defined in the conventional way) spends time in both the “worker” category and the “owner” category.
The ordinary middle class pathway is to work for 30-50 years and then retire on their savings (or a defined contribution retirement plan) or to rely on a defined benefit pension fund that is itself invested in securities, aka capital. This is the baseline expectation of retirement planning for the middle class in the U.S.: the investments/savings provide the cash to live on, while ownership of the primary residence shields the retiree from certain housing costs, or can provide cash flow through a reverse mortgage.
Through the power of compounding, a 40+ year savings plan generally increases its value over time so that the vast majority of the value comes from return on investment rather than invested principal.
If you want specific calculations, we can do that to show that the typical middle class path takes in more than “a very small amount” in their retirement savings/investments.
These details are obvious from my first comment in this thread, that the middle class in the United States works its way into an “ownership class” in time for retirement, through savings/investment. That’s exactly what I meant in that comment, and spelling it out makes it pretty clear what I meant at that time, and that I haven’t shifted my position in this thread.