A reason I would still bias towards postgres is the maturity of managed solutions (including decoupled compute/storage solutions like Aurora and AlloyDB).
Are managed "proper OLAP DB" solutions competitive with managed RDBMS from a price and ease of use standpoint?
Using TimescaleDB from a managed provider is limited, unless of course that provider is Timescale. Other managed providers are only permitted to use the TimescaleDB Apache 2 Edition.
Are managed "proper OLAP DB" solutions competitive with managed RDBMS from a price and ease of use standpoint?