The government won’t allow it.

Restrictions on home purchases in key cities will be a long-term measure.
With a limited supply of housing vouchers, liquidity is paramount. No matter how valuable an asset is, if you can't convert it to cash when you urgently need money, it's worth nothing.

A short absorption cycle is a critical indicator. If a property priced under $20 million is listed near the average transacting price, it should sell within three months; otherwise, buying it carries risk.
If someone else can't sell theirs today, and tomorrow it gets stuck in your hands, you won't be able to sell it either—it's the same problem.

In 2020, the net worth of wealthy individuals rose by an average of 70%, but what about property prices during the same period? Can you point to any neighborhood or residential community that went up by 70%?
No, not a single one.