http://news.stanford.edu/news/2011/march/new-york-proposal-0...
There are actually several proposals being considered by the city to encourage the creation of a top 10 technical school in NYC. I have high hopes that one of them will bear fruit.
I agree with you that the lack of a top tier tech school right in NYC remains a big problem.
http://www.news.cornell.edu/stories/March11/NYCTechCampus.ht...
The lack of good public schools is still an issue I think. The major tech corridors (bay area, research triangle, seattle/portland, northern VA) are all close to top-notch state engineering schools. I worked at a startup in northern Virginia and definitely noticed that having Virginia Tech right there was a great benefit as we grew. I think that's a huge weak-spot for NYC.