If we are going to build a new highway, which will definitely become clogged and need endless expansion, then is there really a point in building it at all? That's why I think if we built the 413 it should be tolled.
The point of the new highway is to carry a significant number of additional trips though the region, both existing latent demand and the demand growth expected with the further development of the City. Not to mention the increasing need for infrastructure for goods and services movement throughout the GTA. While it would be great to support alternative modes, and we absolutely must, the need for accommodating increasing vehicular trips should not be ignored.
I would argue the opposite, if the new highway wouldn't be used there would be no point building it. The fact that it will become eventually clogged indicates a need for the connection and capacity. Perhaps over time, Eglinton LRT and the Ontario Line will become at capacity and clogged, is that not indicative of a successful project?