Did you even read your link? (Score 3, Insightful)

The Avro Arrow was a plane produced by Canada that was years ahead of its time. Unfortunately, because of the immense pressure from the U.S. (they didn't want Canada to sell the technology to other countries), the project got shut down.

From the article you linked to:

As costs rose, other divisions of the armed forces saw their own budgets cut, and even groups inside the RCAF in charge of European operations were worried that there would be no money left over for a new tactical fighter needed there. In-fighting soon reached the top of the military. In August 1958 the CSC advised the government to cancel the Arrow, and buy two Bomarc and 100 interceptors from the US, as well as constructing two SAGE control installations in Canada.

The Avro Arrow was an interceptor designed at a time when everybody else was shifting to missles for anti-bomber defense. The plane's expense threatened funding for other programs, so it was killed in budgetary battles.

Then there's this:

The US is also often blamed for the demise, often with claims that the US aerospace industry was upset about the 'upstarts' in Canada that were making them look foolish, or alternately that they were hunting for Avro employees. A cursory examination of the historical record shows the falsity of this claim. Quite to the contratry, the US military was distressed at the prospect of losing a first-rate staff in their own North American ally, and even considered buying 50 Arrows to give back to the RCAF in order to ensure production.

I know it's fashionable to blame the Americans for everything. Don't get me wrong, I find it quite entertaining. But you shouldn't be too quick to rule out the Freemasons or the Illuminati, or perhaps even something so mundane as internal politics.