I agree with you completely, and a lot of talent surely goes to waste. I'm not sure what difference you think that makes. If the kid from the poor family isn't well prepared by the time he gets to MIT on day one, all of the natural talent in the world isn't going to change that.

One of two things will happen: He'll fail out; this is common for diversity admits. Or, he may require a remedial curriculum to develop these natural talents he is believed to have, but may not, nobody's really sure yet because he can't demonstrate them as well as the other students from richer households. Either way, a prestigious university is not the proper forum for that.