There's also a Starbuck's just announced for 300 Front St W, just a block away too. [And yes, I just responded to myself]There's a Starbucks opening soon in Simcoe Place (just east of the food court). Should help a lot as both Wellington/John and RBC Dexia are crazy busy.
I've thought this through from time to time ... I don't think its a clear cut answer ... it may simply be, if there was no path, there would be much much less retail in the core period ... I'm not convinced it'd all be located externally.Imagine if there was no PATH, how much more retail would be on the streets instead.