Land and Expand vs Integrated Suite

Consultant's approach:
Land and expand may be great for shareholders from a margin and revenue perspective, but from a customer's viewpoint, you'd do well to consider ways of negotiating an integrated suite deal at the get-go rather than adding individual modules piece-by-piece.
Or,
As an alternative, when you purchase a single module or two, require vendor to lock the pricing for adding components for a period of time based on a bundled negotiation.