Dr Tooth is Right. It's the RECESSION! Attendance for ALL live shows, be it SSL, DOI, Dora, etc... have been Much less than they were in the early 2000's and late 90s. In this economy the cost to put on these elaborate stage shows has skyrocketed, and therefore the ticket prices Have to go up. The average family can only afford to see one or two shows a year. And since shows like SSL and DOI hit the same cities at the same time each year, lots of parents feel confident that they can skip a year or 2.
SSL Fan, you also have to realize that DOI is produced by a multi-Billion dollar, for-profit corporation, that can afford to tour a cast of 50+ people and a crew of 20+, even if ticket sales are low. The VEE Corp SSL shows, however, are funded by Sesame Workshop, a NON-profit Corporation. The money they make from ticket sales and merchandise, and other SS toys and DVDs is what funds any SS production. I know you and I don't feel this way, but overall, Mickey Mouse has more appeal than Elmo. You also have to take in account families who can't afford to take that dream vacation to Disneyland or Disney World. Many times, the best parents can do is taking their children to see Mickey and Minnie ice skate, even if that means missing out on Elmo and Dora this year.
Sesame Workshop is trying their best keep their shows running as cost effectively as possible and therefore, have to take highly necessary steps; such as: remounting old shows instead of spending $3 million every year to keep making new ones, and shrinking the cast from 19 in the 80's, to 17 in the 90s, to 16 in 2006 and to 13 or 14 now.