If you mean USSR, then no, not really. While it was stratified, the privileges that those at the top enjoyed were not as far divorced from the life of an average citizen as the lifestyle enjoyed by the wealthy Western elites. The major factor was that all those benefits were formally perks of one's job and position, not something you could just buy for private use. And so, while nepotism was very much a thing, and ensured that children of the elites would inherit those positions, even well-connected families were limited in their ability to accumulate generational wealth.