You’re not thinking the useful perspective:
It’s the COST PER MINUTE TIME SAVED
I think that the costs to save a minute through Georgetown is quite reasonable, compared to the costs to save a minute between Kitchener-London.
There are literally over a thousand separate construction projects between London-Toronto, and they might only hit, say, 50 to 100 or 200 of the most cost-effective projects. Some are a stretch of track between two signals, some are are a new switch, some are a new or rearranged signal, etc. Each may save seconds or minutes by themselves (or in combination), and some are better bang-per-dollar in long term time savings. New track never saves time by themselves, it’s the combination of new track + related signals + related switches.
New track hooked into low-speed switches, means you still must run slow on new track. New track hooked into old signals, means you still are bound by the constraints of the old signals and layout. So some projects need to be done as a combination, to get the maximal time savings. You literally have to TETRIS all those related mini construction projects together to unlock the best bang-for-dollar. Even forgetting to do some items or postponing some items, means you’ve punted time savings down the road — just look at what happened to the Georgetown Corridor, they had to punt a few things down the road, not all time savings were fully unlocked (and still isn’t yet).
They should find the cheapest minutes to fix (as individual projects and packages of projects), and fix ALL of them.
