Some more thought about Quality-Cost-Delivery

Quality, Cost, and Delivery (Schedule), the three most important elements for a project, become a triangle force form inside a circle.

Ideally the full-balance force form looks like below:

Imagine cost is not an issue, quality is the most important, and the schedule is flexible. Then the force form become below:

But normally client is pushing the deliver date, or client delay the handoff but still want the package to be handed-back at the same time. Which means the delivery date is not negotiable. Then how worse the project could be? Add more resource to ensure the quality? Keep the same resource but loss some part of quality?