There is a lot of talk that the BBC should scrap the licence fee and go to a subscription service because not everyone agrees with the BBC's political positions or find value in it's services.
I think there is even more merit in this argument when applied to the monarchy. Many people feel that monarchy is a moral wrong, or don't find it beneficial, yet are forced to support it's activity through taxation.
Instead there should be a volunatry levy to support the lifestyle of King Charles et al. Perhaps if you don't pay into the monarchy you have to pay a smaller amount to support a slimmed-down, elected head of state?
Far from being the end of a proud tradition, I think the Monarchy might make more money from this approach, with some canny marketing: allow foreigners to pay in to become subjects, stop letting commonwealth citizens be subjects for free or set up a premium subscription with benefits for paying more.
Whereas the rest of us would happily make do on the basic package: with elected King Martin Lewis doing royal visits using Ryanair, and the letter when we reach 100 coming second class.