What if the client wants to start small?

That can be sensible. A client might start with a public Digital Twin foundation and later add private brain, staff assistant, deeper image context, reporting or more Q&A.

This fits the bronze-to-gold model. Start with the foundation, then improve the depth and usefulness over time. Pricing and scope should be framed as a commercial discussion rather than a fixed public promise, because needs and delivery pathways vary. In other words, the goal is to give the client a controlled first AI layer instead of leaving the whole topic vague and undefined.