Yes. Biharis are kept in perpetual poverty due to racism. Biharis are one of the most (if not the most) capable people in India.
Racism by whom? AFAIK most of India's PM were from this UP/Bihar belt. Top ministerial positions including that of railways, home, defence were/are held by north Indians. South Indians hardly had any major representation in the Union cabinet. So, what went wrong for Bihar?