Ok, although this is not the right topic at all, let me correct a few misperceptions here, as my personal values / credibility are challenged by what you believe to be true :
1- There are over 200 Grandes Ecoles in France. I did not go to X, but to one of the Centrales. The same way as people get into Polythechnique, ENA, HEC, etc which are ALL Grandes Ecoles, I just studied hard, took a competitive exam with neither my name nor my picture on the papers, and got in based on my ranking... It is not connected, believe it or not, and the only connection you get out of X or ENA is the alumni network (which, logically, you can only belong to once you got in, etc, etc...)
2- Funding of Grandes Ecoles: that is a subject of debate. Indeed, they are better funded than the universities, and it is quite unfair. I agree with you that universities are not valued enough in France. But they need, in addition to money, deep reforms to make them more in phase with what the professional world is expecting (France accounts for more psychology students that all of Europe - source : The Economist).
3- Grands Corps and Grandes Ecoles are two different things. Grande Ecole is a label (same as EQUIS, AACSB), while Grand Corps are civil servants, who are often succesful Polytechnique Students who got into the prestigious Ecole des Mines, etc... or ENA alumni, etc...
4- Maybe the French system is very elitist. True. But so are all systems : aren's b-schools elitist ? What about Law school, med school in the US ?
5- As for the Cereal box. Do you really think I would try to convince the school to take me because I love strawberry Special K's
??? Anyway, I suppose you just say that to be nice and help, so thanks a lot.
Edit : From wikipedia (so it can be challenged...) In 1979, in honor of a $10 million gift made to the school on behalf of John L. Kellogg, the former president of the Kellogg Company, the school was renamed as the J.L. Kellogg Graduate School of Management.
So should I talk about corn flakes if ever I get an interview ???