Drunkard's Life

Assume the following situation:
There is a drunkard who creates a lot of confusion if anyone tries to understand his lifestyle. This person goes to an alcohol shop in Canada, gives US $1, gets a bottle of beer and a change of Canadan $1. Now he moves to a nearby alcohol shop in US, gives Canadan $1, gets a bottle of beer and a change of US $1. The drunkard with his wit repeats this process indefinitely.

If everyone is getting profit from their businesses, who is under a real loss?