But that very principle could be dismantled in the latest chapter. . .
Good!
Intentionally, that very idea is an absurd invasion of property rights. You want to get to the beach? Great. Do what everyone else does. Make arrangements--of whatever kind--to whoever paid good money to own the valuable location you have decided you want to occupy.
He owns to the waterline.
The beach is the area within the very high tide zone and the water at any given moment.
He does not own the beach
This mega rich a-hole owns to the mean high water line and not any further.