I believe it would be cheaper to run stateless (given the reduced overhead of devops)? It is an open secret that the most expensive commodity in a datacenter (servers) is also the most under utilised. Hence, folks like me prefer to pay per-query cost.

Elastic had to do this in face of competition from the likes of quickwit.io and snowflake search. AWS might have something similar up their sleeve, because I don't believe Athena/Trino can do super fast searches, yet.