For pricing data, sure, but for things like fundamentals or economics where there are estimates that are revised over time, one way to store this data is with a versioning feature. It allows for PIT data without much overhead, in theory.

And actually, pricing can be revised as well, though it is much less common.

That said, versioning is not the only way to handle these kinds of things.

Versioning can also be useful as an audit trail for data transformation. Though again, these could be stored in another way as well.