That is the usual reason teams start. Copilot does not work around messy data — it acts on it, answers from whichever duplicate it happens to pick, and writes more back into Dataverse. Monitor gives you a dated, defensible read on entity and field health before the rollout, and Clean and Prevent close the gaps it finds.
Yes, and many already do. Microsoft partners and consultants use Plauti on their own engagements: a data health check on day one to scope what a migration is really carrying, bulk merging to clear the backlog before go-live, and prevention left switched on at handover so the environment does not drift back. Because it installs from Microsoft Marketplace and runs inside your own Dataverse, the configuration your partner builds stays with you — the same rules and the same view, whether they keep running it or your team picks it up after handover.
Not for day-to-day work. The exception is large batch clean jobs, which are processed on dedicated infrastructure or locally, under a signed data-processing agreement.
Yes. The surviving record carries a marker showing it was merged, so anyone working that record can see what happened, not only an admin reading an audit log.
Checking data health and documenting your entities and fields carry no extra cost once Plauti for Dynamics 365 is installed.