If you're offering "FinOps" consultation to reduce the 30%-35% waste of a company's cloud spend, and the way you're doing it is by purchasing a bulk of reservation to "show optimization" first - you're wasting more to your clients and *locking them in a wasteful state*.
A true FinOps consultation should invest a month of drilling down to the business, core services, why things are built the way they are built, and then, once you understand the business and the true baseline to cover - only then purchase reservation.
Stop lying to your customers. It's absured you're using a financial plan to cover waste. It's not optimization, it's still waste, but now it's locked to a 1-3 years.