Things that are free have no value. People won't be that bothered if they miss out on it as they paid nothing.
What about free entry to cc quarters and semis for anyone who attended an earlier round? Gives fans a reason to attend early rounds and makes rl look like a must see event to the masses watching on the bbc. Half empty grounds in the latter rounds tells the auidience that rl is not an event worth bothering with given that even hardcore rl fans cant be bothered to attend
You don't grow events by chucking free tickets about. That's how you lose money.