I wouldn't call it "greedy". Is Disney expensive? Yeah. But you have to remember-- Disney is a luxury, not a neccessity. Their prices are based on supply and demand, and ultimately they are a company looking to make a profit. Prices are calculated by how much $$ their target audience makes and can afford. Someone pointed out that a 1 day ticket is astronomical, however, a 7 day ticket really isn't that bad. True statement. Also, their snacks are noticeably cheaper than movie theaters. I'd know, I worked at one for 2 and a half year.
Then again, I'm a Florida resident and our prices really aren't bad at all. 3 parks for $139. Not bad at all. Can everyone afford it? Of course not. I'm a college student. My finances are pretty stable now that I have a better job, but I couldn't even afford THAT in the past. I'd imagine that Disney's "target audience" is not college students. If it were, they'd have a student discount. I just kept in mind that Disney is a luxury, and tried to save what I had so I could afford to go back.