This was a great read - particularly the section on the thinking framework / mental model. I think survey papers like this are necessary to keep up with what's going on in the community.
India's population "problem" if it can be called that is in only 3-4 states out of 28 - Uttar Pradesh (230M), Bihar (120M), Maharashtra (120M). Most states in India have population densities comparable to countries in Europe.
Very insightful. In your expert opinion, what are some of the core features / functionality that an IoT database platform should have (that existing solutions or combinations of them on AWS / Google Cloud / Azure don't provide)?