[Doady]

There are a lot of types of employment: government, retail, office, industrial...

It is economically not feasible for GTA retail and industrial to be concentrated in downtown Toronto, so that's a significant proportion of jobs right there. That just leaves government and office jobs.

And no, 905ers should be forced to go all the way to downtown Toronto to do their shopping. That's just inefficient and foolish (especially for transportation), even if it was economically feasible for all retailers to locate downtown.

Considering the structure of GO and its high ridership, I would say employment in GTA is plenty concentrated anyway.