Why we do not have enough Engineering Colleges in bihar?

Hi,
As we all know, if any students decide to do engineering. Generally we get a suggestion to go south India and the fact is we do not have enough Engineering or medical colleges in Bihar.
As i know maximum colleges of south India is run bt ex-MLA and MP. Why do not the MP or MLA of Bihar start colleges in Bihar so that we can have option to do engineering or medicals in our states itself?