The Poly might be more money right at this moment than it was back then, but it's still possible to get a room at WDW that is priced in the mid-$80s. The All-Star resorts have 2012 rates for value season of $84 for weekdays. So, my parents paid $80-some back in the day and it's possible to go today and pay $80-some. Different "level" of hotel in today's standards, it's true, but I guarantee you that the amenities of the Polynesian back then were not even close to what they are today.That is the point. The room may cost four times as much, but you are making more money than you did in 1980.
So talking about a guy making $30,000 and paying $80ish dollars a night then vs. a guy making $120,000 and still has the opportunity to pay $80ish now doesn't do much for me in the "it's so expensive" argument.