Good schools have no incentive to control costs when they have more than enough students desperate to get in regardless of what the price is. I went to NYU and I remember hearing one of the security guards, a mid 30s obese woman, chatting on the phone about how making six figures is nothing and even she makes six figures (her only job is to sit on her ass all day spending 10% of her time checking student IDs and 90% of her time chatting on the phone).
Meanwhile I'm getting solicited for donations every year from the school. I see that they refurbished Tish hall again, the undergrad business school building. I don't really see the need to redesign the building every 4 years, when it was in great shape before, but they need to spend their money somewhere. I guess getting the 100 million dollar donation from Paulson (and countless others) isn't enough for them that they need my support too.
This will not change so long as everyone views higher education as the holy grail and persues it at any cost.