Royalty

Actually a public execution of a royal would generate A LOT of income for the country. It's considered a dignified way to die (by some), and she gets to act on what she says: serve the country with her live. In this case for amusement, raising morale and generating shitloads of income. Think about it, we could have the axe sponsored by Gillette, broadcasting rights sold to a multi-national news corporation and premium royal box seating (LOL) tickets auctioned of for millions.

Not to mention turning their property portfolio into social housing / renting it out to companies. Buckingham Palace Asda anyone?