All space agencies share any information they gain. The Canadians just don't have as big of a space agency as the U.S. Sure, they can send more people into space to do research, but the fact of the matter remains is that the U.S. can funnel in billions upon billions of dollars to NASA for things like the Robonaut and building, literally hundreds of rovers and probes to search the solar system.

It's also a point of national pride in the sense that you can say, "See we have people going up into space conduction research too! We're contributing."