I’ll just point out on the Snowflake side, we’ve been very public saying we want Iceberg/Parquet to be at or as close to parity as possible with our native format. The value add
is the platform, not lock in. That also forces us to be the best on open formats, which IMO is also a good thing for everyone.
Disclaimer: I work at Snowflake literally on this with my team. :)