You should be asking if the ruling class wants the middle class to exist. What is in it for them?
In the US we have almost no social safety net. We're cutting back on food assistance budgets, cutting back homeless aid, cutting back medical aid. If you become homeless, suddenly you have next to no chance of finding a job again, and no help from the government.
Cost of living is spiraling out of control while wages stagnate. People ate already having trouble affording the basic necessities.
We are precariously close to having a starving peasant class.
Median real wages in the United States have gone up over the last year. Same thing over the last five years and the last ten years.