No? There's very clearly an efficiency past which renewables exceed even the cheapest fossil fuels. Even with falling prices as a result of lowered demand, it's still not free to transport and extract.
Not saying any of that is true of India specifically - I’m not familiar enough to have an informed opinion there.
Thats kind of the point. The cost of capital is rightly higher in developing nations. Capital intensive carbon neutral projects just don't make sense for much of the world.
I'm not sure what kind of sources you're looking for, with such an unbounded hypothetical.