Okay... hear me out. I have an idea to settle this royal family business.
One son is loyal to his family and the crown.
One son is a traitor to his family and the crown.
Trail by combat. Sword fight to the death. William vs. Harry.
Live and only on pay-per-view (because mainstream networks might be squeamish to air it

). Mark my words that people from all across the globe would tune in to watch it. It applies to a very wide spectrum of people. On one side you have people who are deeply invested in the royals and on the other side you have people who don't care for the royals at all but would be interested in an old school gladiatorial-style trail by combat. UFC, eat your heart out!
I've got $100 on William.