In addition to regulated industries that require this because they are life critical, there are applications with legal requirements to host data in the same co

In addition to regulated industries that require this because they are life critical, there are applications with legal requirements to host data in the same country as users and vendor X may not operate in that country, plus military applications where the threat model includes people firing missiles at your data centers and spies and saboteurs infiltrating vendors. Most use cases for self propelled flight don't require rockets that can get to Mars, either, but we still celebrate their existence on Hacker News.