There’s always a price to pay for every privilege. Business travellers pay more and fly the same distance in luxury. Women have seats reserved in metros and buses, but are classified in the same category as children, the elderly and the disabled. Minorities do have seats reserved but practically no power to wield.
For a good comprehensive overview of the caste system, the author recommends the summary of Professor M. Narasimhachary’s lecture in the IK Foundation Lecture series, ‘Indian Culture in the Modern World’.