Why can't India manufacture bullet trains?

I have flown Supersonics and I can tell you that India cannot manufacture a 5th generation fighter jet. Similarly India does not have the technology nor the money to back R and D to manufacture bullet train. The basic components are the avionics and the power plant which has to be tested in wind tunnel.India just has no expertise in this field and even if India starts now it will be at least two decades behind China and Japan and the technology which we will produce will be obsolete. The problem with India is that in 1948 India had a more advanced basic industry then China where not even a bicycle was made but China by building infrastructure and basic ingredient of science has taken a lead and the bullet train and the fifth generation Fighter the Chengdu is Chinese achievement. India will have to thank Pandit Nehru for being the leggard in the world.