mmm, I though Scrooge only appeared at Xmas ...
what about the marshalls, signposting etc - I hate having to stop all the time to check a map. There's also mechanical support (should you need it), quicker access to medical services as they're 'on hand' - a rider I was with brole a collar bone last year in th middle of nowhere, and the marshalls (one of whom happened to be a paramedic) quickly organised ambulance for rider and transport for bike ...
You're right, they can't legally charge you to ride a route on public roads, but you're paying for the organisation, not the use of roads ...