>Some of the most prestigious parts of the UK and Europe are entirely owned by Royalty or hereditary peers. For example, the Duke of Westminster owns 300 acres of the very best parts of London. It's perfectly normal- even desirable- for a significant person to be a tenant of the Duke of Westminster in London. Even the US embassy sits on his land!
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>I don't think those sorts of long-term locked-in dynasties are as common in New World nations, but current events mean that it may become a lot more common.

There are a few peculiarities, somewhere at the submolecular level, which upon meticulous study may reveal the subtle differences between a dynasty or hereditary ease on one hand, and a corporation or hereditary unease on the other.