And how many high speed rail lines or networks are there in the USA?
Not sure if you are based in the US - but its a widely acknowledged fact here that the business lobbies - airline industries etc, in the US are not interested in competing with improved high-speed rail from Amtrak, which is government owned. In spite of this, Amtrak offers a "pseudo-high speed" option, called Acela in the Boston-NYC-Washington DC corridor which is both popular and profitable. Apart from entrenched lobbying, the US has another problem with NIMBY-ism - where the towns along the proposed corridors are populated and would not want the disturbance of a high speed rail going past their "backyard". India wouldn't face this problem because it doesn't have highly populated or built-up suburbs along the proposed corridors. It is orders of magnitude cheaper to buy up the additional land tracts along the new high speed corridor in India.
Besides, to use your own words, comparisons with building and placing satellites into orbit "is a facetious and factually inaccurate argument". Satellites benefit the whole country, the rich and poor alike, but providing services such as telecommunications, weather forecasting (critical for farmers), crop information, locating mineral resources etc.
No one is saying that bullet trains in a 3rd world country like India will not bring benefits, but the point is that it's the well off that will benefit the most by shaving a few hours off their journey times, whereas investing similar amounts will provide far more tangible, and actual life changing benefits to tens of millions. It's a case of priorities. But then again, it's the well off chest thumpers, more interested in prestige projects that are designed to 'impress the west', and who stand to benefit the most, that make the final decisions (which, to be fair, is the case everywhere, even in many western countries).
If your read my post(s), you would see that I agree that bullet trains should not come at the cost of other required improvements. But you are basing your argument on a lot of uninformed assumptions about the Indian rail situation. The biggest point that you keep missing, is that its not a question of pursuing one over the other. The railway budgets for the last few years and the upcoming years, already has allocated massive amounts to network improvements. I have personally seen the steady improvements in quality of service that is happening. Bottomline, India is in a position to afford prestige projects, without sacrificing upgrades to existing service. Especially when over 80% of the project is being funded by the Japanese at a ridiculous 0.1% term over 50 years. If you understand basics of macro-economics, that's essentially free money.
And secondly, There is a very solid business case for high speed rail in India, and the demand exists. The ticket prices from the faster trains facilitate lower cost tickets for the masses - this is actually already the case in India today. India runs over 100 so-called "express" trains - Rajdhani, Shatabdi etc, that cost about 25% the cost of airfare - and proceeds from those tickets sustain the subsidized fares for all trains. You have no idea how quickly the tickets across 1st class, 2nd class, etc consistently sell out for these trains. There is every reason to expect that the bullet trains will continue along the same lines, creating a virtuous cycle of increasing use at the high end, which enables the railways to continue providing subsidized service at the lower end.
We haven't even talked about the environmental benefits of these trains, every passenger that travels on these trains, is one less on an airplane that flies using carbon-based fuels, which have to be imported by India, and pollute the air. Any economist, environmentalist or urban planner knows that high-speed rail is a win-win investment, provided the population density and usage factors exist, and the country can afford to make the investment.