problem will be for lower castes zed,because if the companies leave india and create manufacturing hub in other countries and recruit people from india there will be a large nos of upper caste people as they come through merit in most of the cases,if you say upper caste discriminates u in the educational and work fields why most of the nris and foreign goers are upper caste and they are greeted by the americans and europeans?it will be a great joke if you say that sc/st/obc are discriminated even by the foreigners.along with this i also want to remind you that modern educational system is not so old ,it just came in the british rule .so what is told that upper caste enjoyed education system for thousand years,it is true,but in case of modern education they did not enjoy it for long.so what you said that reservation is 20 years old only,it is enough to the context of the fact as modern education and jobs are only 200 yrs old and reservation remained for sixty years(nearly one third of 200yrs).is not it enough?and i also want to remind you that a very small percentage among the upper castes(2%only)enjoyed higher education and jobs before independence,as there were no plenty of higher educational institutions and modern industries like now,and most of those people who got education and jobs at that time contributed a lot in indian freedom movement and social reformation,and they took the leading role to fight the british to free india where you now seek reservation on the basis
