I think 100m is overstating the hardcore fan base by at least a factor of 10. You can do some fermi analysis to come up with a better ballpark number. Start with the middle class, further segment by young males, further segment by interest in NBA, then multiply by a hardcore fan factor ratio, which you could estimate by taking the ratio in the USA and applying a discount rate.
I think 100m is overstating the hardcore fan base by at least a factor of 10. You can do some fermi analysis to come up with a better ballpark number. Start with the middle class, further segment by young males, further segment by interest in NBA, then multiply by a hardcore fan factor ratio, which you could estimate by taking the ratio in the USA and applying a discount rate.
Ahh-great idea!