It helps, of course, that William now owns the entire island through the Duchy of Cornwall estate.

Source: https://www.dailymail.co.uk/home/you/article-12288339/Prince-George-incredible-bond-grandparents-Carole-Michael-Middleton.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

“It wouldn’t be right for a single individual or single party to seek to change the law in the way the Duchy of Cornwall is treated.

Source: https://www.barryanddistrictnews.co.uk/news/national/23470520.williams-duchy-cornwall-should-treated-private-land/?ref=rss

Meanwhile, his son William, now Prince of Wales, is predicted by The Sunday Times to be worth £1billion after inheriting his father's Duchy of Cornwall estate.

Source: https://www.dailymail.co.uk/news/article-11609209/King-Charles-BANNED-Meghan-Markle-Balmoral-Queen-lay-dying-Prince-Harry-says.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Passengers on board were treated to a luxury trip to visit the Duchy of Cornwall - a private estate established in 1337 by King Edward III.

Source: https://www.burnhamandhighbridgeweeklynews.co.uk/news/23737219.scots-guardsman-passes-burnham-bridgwater-taunton/?ref=rss