Distance can be a problem for anyone - airfare, hotel costs, and the likes REALLY add up quickly. Hell, a $500-800 2-3 day vacation is quite an expense to the average person.
Luckily for this festival, I'm only a 2 hour drive and after the show ends come Friday night, I can drive back home and come back Saturday for only about $20 gas fees.
But, say if it were held in San Francisco, California, (in contrast) realistically and budget-wise, I would most likely hold off on it due to the enormous costs of getting to and from the place. Amazing experience, granted, but it's one heck of a lot of money when there are other priorities to be met.