It's less a question of price and more that of convenience. In India most services don't have the full catalog due to old licensing issues. There is fragmentation. Which does not matter when you pirate stuff.
Thanks. I just assumed amazon, google and itunes would over the same digital catalog around the globe. I have myself mostly bought music from smaller artists via bandcamp or their personal sites, but mostly saw their albums also on these big platforms, so it didn't even occur to me their offerings could differ by country. (strictly talking about music, when looking at movies etc., even central Europe where I am located has severely limited options in comparison to the US. But then, other than music comes with mostly draconian DRM anyway.)