Certainly private sector involvement has been found to benefit public sector investment in both being on time and on budget. I would say that on average it's slightly better. But at the end of the day, the benefits are relatively small and the jury is still out on the financing cost, which is always higher because in Canada the federal government obviously has the lowest cost of financing of any jurisdiction, particularly relative to the private sector, which has a comparatively small borrowing capacity. In that regard there are always going to be trade-offs, and I stand by that statement that the jury is still out on whether or not the net benefit to Canadians and taxpayers is really there.
On April 16th, 2018. See this statement in context.