Why don't people do this now?
Is there even a Montana's in Kanata? Not sure.. There are plenty of other places though, that people don't go to after games. Those same people will not go to the market. The centrum in Kanata is closer to CTC than the market would be to the arena in Lebreton.
I'm not sure why people think it will be a complete reversal from what it is now.
Why don't people do this now? Because we don't have a train that goes to the CTC. We have direct buses that don't stop along the way are unreliable and take upwards of an hour from downtown to take.
First of all, the centrum is not closer. It's a long walk or a 30 minute drive (traffic). Second, there are restaurants on Elgin, on Bank and literally all over downtown. You don't HAVE to go to the market. And third, there's a lot of land to develop it's entirely reasonable that a new restaurant or restaurants will be built if an arena is built at Lebreton.