Who needs a camera this good and this expensive?"
It is not always a need that drives a purchase.
I teach two elective classes at a private high school and I am in charge of marketing/publications. My job does not call for a "need" of a high end dslr. I could probably just buy a 5d mrk II and that would still be more than I need, but the photographer in me "wants" to more.
I took home about 28k this past year.
Quick Breakdown Estimates
$700 Month Rent + Utilities = $8,400
$100 Month Groceries = $1,200
$200 Month Fun money = $2400
$125 Month Phone Bill = $1,500
Total "Savings" = $14,500
Soon to be adding a car to the equation, but I make sacrifices for my passion.
Do I need this camera for my work? No. Do I want it? Of course.
Basically, it comes down to each person's own life and situation. Yes most of the contracted pros or big business individuals are going to be able to purchase this with less impact of their funds, but those of us who are willing to sacrifice or have excess "savings" will be right along with them.
The real question is "What are you willing to sacrifice in order to be able to purchase this camera?"
(Or any item for that matter)
P.S. My photography class is gonna fall in love with this camera once I get it.