@Gist has a fairly good summation in her post of what have and have not means in her perspective.
It is just that, "perspective".
You see, for me I have been 'classified' as working class poor most of my life. I am a business owner now and would still be considered as working class poor. Since I personally don't rely on monetary and materialistic measurement I always loose in these types of conversations. I simply have "enough". I've always paid my way on time. I have enough warmth, shelter, food, clothing and medicine to be personally comfortable. When I have more than my enough I give to others. By my standards I do quite well and have a rich life. To another, who's standard of living is personally higher...I lack material wealth therefore I am poor. I don't feel poor because of my richness in character. You see worldly things hold little value to me personally. Sure, I like to look at, and visit, and touch shiny things but they hold little value to me personally...in other words I don't need to possess them to appreciate them. I've had folks pick fights, and I can only laugh, when they show me a newly acquired shiny bauble and I say, often with glee, oh wonderfu! Yay for you! Congratulations!...they think I'm acting in jealously and they call me out in that false label. I'm then left to defend my stance of no really I'm happy that your aquisition of said bauble has brought you happiness. I'm left to defend my "have not" status which basically only exists in the others eyes because of their perspective that because they have said shiny new bauble they "have" more than me...I'm left to defend that I didn't want the damn thing to begin with so I didn't waste time or energy in pursuit of "it". Yay for them because they did want it, worked to get it and now they have it.
Personal mindset and perspective are what sets the stage for have or have not. The only "class" I want is in my tact and grace not my wallet and posessions. It is in the opposite thought that society sets the standard that...lets say if you do not make $100,000 a year you are beneath middle class...if you do not make $35,000 a year you are in poverty class...and if you make $1M a year you are in the wealthy class. These "classes" are set by Economists as a tool of measurement the same as Educators set a 4.0 as perfect yet a 2.0 is subpar making you uneducated.
With the cost of living rising and wage increase not rising to meet it the crevice between poor and weathly continues to grow, and in America anyway, the label of "middle- class" does not exist except in the Economist's report because for some (recall the personal view of wealth) they are barely making it because their income does not fit their sense of need. Bottomline...they want what the rich guy making $1M a year has while trying to buy it with their $35T a year salary. Practicality says it just ain't going to happen. With that mindset they will continually "have not". I've been known to tell a person outright while they are flaunting their money around . . . "Please don't let your money make you poor in character." Of which many just say huh?