Mid and lower class people won't get rich by saving their salaries.
In fact, it's not unusual that the entire earnings of a work-life of a mid-class worker do not add up to something that would make a person rich, even if 100% of it is saved.
The other side of the coin is that mid-class life is pretty good, most of the GP advice will lead to poverty much more often that it'll lead to wealth, and the one important piece that is "create more" comes by responsible working.
In fact, it's not unusual that the entire earnings of a work-life of a mid-class worker do not add up to something that would make a person rich, even if 100% of it is saved.
The other side of the coin is that mid-class life is pretty good, most of the GP advice will lead to poverty much more often that it'll lead to wealth, and the one important piece that is "create more" comes by responsible working.