erm in this country you get taxed on any income you personally earn, including your savings and foreign earnings. If you are Royal family or even the head of the bank of England you still pay tax.
So do corporates, if the 'private estate' (which doesnt belong to him apparently) pays him a $100million yearly non dividend (for not owning it) , therefore a 'salary' for doing the job of 'running it' , then its a corporation like any other, a charity doesnt make money
As for the argument that the estate paying tax means the money goes back to the royal family misses the point by a few centuries in that
the Royal family don't practically own/run the treasury, but parliament on behalf of someone Therefore its not a royal piggy bank not withstanding the lack of a written constitution
The estate makes money from property, it has no capital gains tax, its not a charity, theres no inheritance tax ever charged through the generations.
Just as it was only fair that the Queen started voluntarily to pay tax, changing the form book, then its also fair that something that looks and acts like a company pay tax also.
And theres the parallel to Lewis living in Monaco, its a type of loophole thats existed because of the lack of constitution and it doesnt happen in any other proper European country with royal families
So if Prince Charles is exploiting a loophole and like other loopholes, someone has actually got around to examining and testing it in court, then it could be closed.
Lewis deciding to live in England for patriotic reasons would be the same as Charles deciding (like the Queen did) to start paying like others.