Postgres does this for _all_ row updates; it must, for transaction isolation to work.
A schema of `party1 JSONB, party2 JSONB, ...`, or even `parties JSONB` would likely be far more maintainable and sensible than the "table-as-spreadsheet" approach.
Though we'll see what the future holds. PostgreSQL is interesting due to cost and features, and many of the large customers are shifting their POV on how they want to run things, almost doing 180's in some cases.
