There are many project delivery methods and many contracting methods, and not all of them are assessed or evaluated on price alone.
In fact, P3 projects are a perfect example of that. Essentially it's a design-build project from the point of view of the actual construction. Yes, it can involve operation, maintenance, and financing, but in a design-build situation, price is not the only criterion. You're looking also at the elements of the design that best fit the owner's needs with respect to the ongoing operation and maintenance of that facility.
The owners themselves can very much pick the criteria. We don't have a problem with that, provided the criteria are well known to the bidders and applied in an even and fair manner.