Judging from reported figures, roughly 80-90% of households in the US [1] have a household net worth of at least $0. That means that most people do in fact have an estate.

Median household net worth is in fact somewhere in the $100k-200k range, which is definitely something that could be meaningfully called an "estate." (Most of this tends to be the house, the median net equity in which is about $190k as of 2022).

Source: https://www2.census.gov/library/publications/2024/demo/p70br...

[1] This doesn't mean "homeowners," rather it's a recognition that assets for married or cohabitating couples are usually commingled.