Sorry if this has already been covered:
a) The 8% rate on the 20% of the total (after grace period) is a big assumption. JICA/Japan can easily bring that down especially if India gives/assures them follow on orders on other routes. Nothing is set in stone at this point. Its similar to the import of the first 36 rafales, there are long term mechanics that will naturally ease the capacity/cash fundamentals (i.e its win-win for both sides given the competition in both travel method and technology provider).
b) The analysis insulates the whole system. A huge amount of traffic will come with integration with the Talgo sets and future HSR extending to Pune etc (i.e throughfare).
The main thing that people (especially naysayers) dont realise about the objectives of this project:
a) Flesh out the issues with HSR in the Indian environment so that we are not caught with a mountain of issues when the demand is actually huge for it (say 2030 onwards). The experience gained by manufacturing, implementing, and running the whole system will be invaluable for later. These effects are completely ignored in the analysis too.
b) Create the capacity before, not during and after (i.e staying ahead of the demand curve).
c) To get a good idea of the financials of HSR and when it exactly becomes viable in Indian environment, so the scheduling of such projects can be optimized all around the country.
Its basically a pilot project. Over-analysing it is pretty silly because the overall plan for HSR in India is still quite fluid....and the loan terms are quite good to begin with and can be made pliable in the future too if needed.
@Abingdonboy @anant_s