> We have 5–6 very good open-source data warehouse alternatives. We have Redshift, DataBricks, Firebolt, BigQuery, and likely a few other enterprise offerings, yet it is surprising how little training most companies have in negotiating and re-negotiating vendor contracts or in pushing for heavily discounted pricing.
Small nit: Redshift isn't open source. I would also add Clickhouse, Citus, and TimescaleDB as majorly capable open source technologies with commercial offerings in this space.
Small nit: Redshift isn't open source. I would also add Clickhouse, Citus, and TimescaleDB as majorly capable open source technologies with commercial offerings in this space.