The monarchy might even be a profit-making enterprise for the British public. I've heard the monarchy referred to as "Britain's answer to Disneyland."
The changing of the guard at Buckingham Palace draws countess tourists every year. Royal guards and castles plaster British travel brochures.
In some ways, the Royals are like those people in Mickey Mouse and Cinderella costumes at Disneyland. They get paid more, but that's part of the attraction. Unlike Cinderella they're "real" royals, and the high pay is necessary to keep up that illusion.
They also serve other purposes for the British government. PR and diplomatic stuff. If Britain fired its Royals, they'd have to hire more diplomats and PR flaks. They cost money too, and might not be as effective.
It's a cushy job, but it has its drawbacks. You can't tell the world what you believe. We're free to spout our own political opinions, write books, make YouTube videos and films, saying whatever we please.
They're even more deplatformed than us. Everything they say in public must first be vetted and approved by their woke Parliament. Step too far out of line, and you'll be fired or forced to resign.
I agree, in all that.
Their money is made from industries they owned before the Monarchy officially ended its control of the government. Yet their busineses were all created by the slave labor of the citizens.
That is not arguable, it is a fact.