I think a lot of folks need to re-calibrate their expectations.
Internet high five!!! It completely confounds me how people pay thousands for a hotel room next to the convention center. My hotel bill is $280 for four nights (Wed - Sat). Yes, I'm staying at a 2.5 star hotel on the outer loop of town but the savings pay for my ticket, events and mad money at the con. Parking isn't that bad if you get a Gate 10 ticket. And who really remembers their hotel experiences (unless it's bed bugs... I remember the bed bugs from a different event...)
The convenience is more important to me than the money. I am fortunate enough to be in a situation where I can easily afford it. But for some I agree with you. Especially the people who are on a tight budget, they could save quite a bit of money by staying out and using that to buy more gaming stuff/do more events at the convention.