When will India have professors like that of Harvard or Stanford or MIT?

Hello Community, I have been following and learning from lectures of Professor Mehran Sahami and David Malan from CS50 and oh man they are just so, so good. I learnt a lot and have been doing a lot of programming in C and learning Linux lately. We do not have such professors in India at IITs/NITs or other so called Tier 1 universities. Why is that so? Why we always lack such quality in all the fields be it STEM or medicine or even other subjects? Everything is absolute trash and mediocre to say the least. I have met graduates from old NITs and IITs and they tell me that they are only there for placements and college life. This means that given the chance, they would not attend even a single lecture in 4 years and would rather play Counter Strike and watch porn! and at the end boast about those 40 lakh/ 50 lakh placements. I mean wtf is going on really!