* Apples and oranges: Clickhouse is a query engine while Databricks is a SaaS product/company. Apache Spark could be compared to Clickhouse, Databricks to clickhouse.com/company. The latter is barely a couple months old.

* Databricks pivoted from analytics to ML and it's not just marketing. Clickhouse is all about OLAP use cases.

* Clickhouse competes with Druid/Pinot/Timescale, Spark competes with Flink.