Pfft. Let them come.
The "big bad Americans" have come in before and everyone was scared. I remember a few years back when Krispy Kreme was coming to town. Everyone was panicking that it would be the end of Tim Horton's. Where are they now? Closed thier doors not too long ago. Even putting thier wares in all the WalMarts and Petro Canadas couldn't save them. Tims grew exponentially and is stronger than ever. Moved into the US if I am not mistaken and doing well.
Several years ago, an Eagle Hardware (if I remember correctly) came in promising lower prices and better service. Opened up a HUGE store in Edmonton on Calgary Trail and Whitemud Drive. Prime location, lots of drive by traffic, etc. Lasted less than a year if memory serves. Turned into a high end furniture store and then into IKEA.
My point is, these "big box" stores will either succeed, or they won't. Home Depot stuck around, but now Rona is doing better than they ever have as direct competition. Number one rule in retail is to not be afraid of your competition. Just do what you do best that got you where you are today. The folks at Fish Tales, Hansons, Wholesale, Bowriver Troutfitters, likely aren't shaking in thier boots at the arrival of BPS, they probably welcome it, because they know in thier hearts that they will OWN them when it comes to two things, in my mind 1. Customer service, and 2. Knowledge. I'll bet that not ONE of the folks at BPS could hold a candle to the dudes at Fish Tales, Westwinds, Hansons, Bowriver, or even Wholesale when it comes to fishing the Bow or some of the other rivers around here. That's where the mom and pop shops of the city will have thier advantage and that's why they will survive.
As for me. I won't go to BPS. I live in the SW. It would take me an hour to drive up there. I might visit it on my way to my buddies place in Airdrie, but that would be the only time.
I'm not worried and I am sure that they aren't either.