Bettyboy72 said: "
Like a kid today couldn’t just cut school or take their allowance or lawn cutting money and take a train into the city and see a show. Something happened that made Broadway prices inflate significantly greater than wages. "
When I was in college I took an elective on the economics of the arts, and the explanation given had to do with the relatively fixed productivity of workers in the arts relative to other industries. Advances in technology in most areas has dramatically increased employee productivity, which has allowed employees to make much more money. However, it still takes about the same number of people to put on a non-scaled-down Broadway show as it did in past decades. Broadway employees still expect (and require, given inflation) their salaries to rise with those of the general population, so the supply curve must inevitably reflect those rising salaries without comparably rising productivity. This causes ticket prices to rise faster than inflation. Something similar could be argued for the price of higher education.
I don't know if this explanation is still offered by economists, or indeed if it ever held water, but it made sense to me at the time!