Besides, I'm sure Disney has thought about this. Going to a Disney park is usually somewhere between a once-a-year or a once-a-decade treat for families with kids. They'd probably rather have it be just affordable enough for middle class families because those families and kids go on to consume tons of other Disney content and merchandise. Letting average people have access means it reinforces the fandom for generations to come, as opposed to just having the park be a rich people thing.