The bootstrap effect

When the standard of living of the country goes up its rich become richer, middle classes become richer and so do the poor.
I call it the bootstrap effect and i believe (without sufficient data though) that a higher percentage of people in this country today live in relatively less trying conditions and have a better chance of a brighter future...
The said bootstrap is however elastic in nature and hence the difference between the classes seems to go up - a dangerous condition indeed and one whose fix is hard to grasp (probably socialism).
In effect the employment of maids drivers and cooks is a way to distribute the wealth in such a massively populated country via this effect. Fair? Donno...