As an outsider, it looks like India is trying very hard to figure out a path to success. But, probably for historical reasons, it's looking for a path to a Western U.S./Britain model of success rather than East Asian Japan/South Korea/Singapore/Hong Kong model.
I don't know which makes more sense for India to look towards, but I wonder if a New Delhi that looks more like Seoul than London makes more sense and if modeling a future path on established paths to success and growth is a better idea. There may be more cultural similarities (for example, the social difficulties of coming out of deeply entrenched caste system, a deep respect for education, etc.) and adapting the same patterns for India's local conditions might work better
For example, building an export driven economy like Japan and Korea did, has resulted in unbelievable economic growth, advanced technology, and global respect. By and large those countries are also able to retain talent, build sufficient educational institutions to train that talent, have enough local economic opportunities for that talent to make money, and have a vibrant enough economy to allow them to spend that money locally.
It seems to me that many of the basic pieces are there for India to follow those models, and with a massive and cheap labor pool (one of the main requirements for this to work), make it happen.