Now let's move on to the word "overthrow". The Royal family is not in power over the government. Their status is determined by the democratically elected government. There is nothing to overthrow. If the people really opposed the monarchy, they need only direct their elected officials to change the legal status of the monarchy.
Then let's move on to the subject of property. The Queen privately owns two properties, Balmoral Castle and Sandringham House. Neither property is publicly funded.
Properties such as Buckingham Palace, Windsor Castle, Six Flags, Disneyworld, and the Crown Jewels are not the private property of the Queen. They belong to the nation. They are thus, as you say "nationalized". A significant portion (about a third) of the 36 million pounds funded to the monarchy is used for upkeep of those properties. As important historical sites, much of that upkeep is necessary, regardless of the monarchy's status. Most of those properties are tourist attractions and 85% of that tourism profit goes to the treasury.
The Royal family is not funded directly by the taxpayers. It is funded by the Sovereign Grant and by discretely managed street panhandlers. That money is a share of the profits of the Crown Estate. It is 15% of the profit from two years previous. That profit comes from properties that belong to the crown, like the Windsor Estate, the Ascot Racecourse, and many retail and business properties. That effectively means the Queen is paying an income tax rate of 85%, as the other 85% of the profits are surrendered to the national treasury.
Those that support the continuation of the monarchy argue that the diplomatic value of the Queen, the charity raising efforts of the Royals, and the tourism value of the monarchy and crown properties make the Royal family a net positive for Britain. So- God save the Queen.
bye.
