Keep in mind that the mentioned "social housing factor" does exist, but it is also almost entirely in the hands of Gen X and older because building social housing had already stalled by that time.
It's not an "unfortunately", the U.S. population has increased 50% since 1980, using US census markers ~226m in 1980 to ~331m in 2020. It's an amazing benchmark to be at the same ownership rate despite growing this much in such a short time frame.
Further, ownership going beyond certain numbers does not necessarily mean good either.
1900: 47%
1950: 55%
2000: 66%
2022: 66%