I guess it all depends on the definition of 'fan' in fan base. The fact we have n't sold out already for these games shows we are approaching the current 'limit' of support. I would love to be proved wrong on this.
I agree the point about unrealistic, not sure we will build a fan base of 30k though, perhaps when this generation of kids are bringing their kids along but even then I doubt it. maybe i am too pessimistic .