The point is more so in aim of creating interoperability between systems and making them in turn composable.

When there’s a common intermediate representation you can pass around those compute instructions and execute. And when there’s shared memory formats data can pass from storage to engine without serialization/deserialization.

So it wouldn’t matter if data is here or there, in this or that format, because the instructions are the same the specific interface (snowflake, MySQL, a local parquet file, etc) is irrelevant mitigating the need for glue code.