After running Snowflake in production for 5+ years I would rather have my data on something like Parquet/Iceberg (which Snowflake fully supports...) than in the table format Snowflake has.
It's not that deep
It's not that deep
I think a hybrid approach works best (store on Snowflake native and iceberg/tables where needed), and allows you the benefit of Snowflake without paying the cost for certain workloads (which really adds up).
We're going to see more of this (either open or closed source), since Snowflake has acquired Crunchydata, and the last major bastion is "traditional" database <> Snowflake.