That looks like a different use case.

The Snowflake-for-health is more about opening EHR data for operational use by providers and facilities.

Versus being locked into respective EHR platforms.

If Oracle provided a compelling data suite (a la MS) within their own cloud ecosystem, they'd have less reason to restrict it at the EHR level (as they'd have lock-in at the platform level), which would help them compete against Epic (who can't pivot to openness in the same way, without risking their primary product).

I think you mean PostgreSQL for EHR data. MS Fabric and Snowflake are analytical databases, not operational. Patient privacy requirements (and HIPAA law) is a blocker for having an open operational database for EHR.